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NASA space telescope gets 1st clear X-ray image of sun-like star blowing a bubble | Space

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# NASA space telescope gets 1st clear X-ray image of sun-like star blowing a bubble

[News](https://www.space.com/news)

By
[Samantha Mathewson](https://www.space.com/author/samantha-mathewson)

published

24 February 2026

The observations offer a rare glimpse into our solar system's early history.

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Astronomers have captured the first views of a young sun-like star blowing bubbles, offering a rare glimpse at how our solar neighborhood might have behaved in its youth.

Using [NASA's Chandra X-ray Observatory](https://www.space.com/18669-chandra-x-ray-observatory.html), researchers observed HD 61005 — a young star located about 120 light-years from Earth with roughly the same mass and temperature as our sun — and detected a vast bubble of hot gas surrounding it. This wind-blown bubble, known as an "astrosphere," forms when a star's powerful stellar wind slams into surrounding interstellar gas and dust, carving out a protective cavity much like the sun's heliosphere that shields our solar system from galactic cosmic rays, according to [a statement](https://chandra.si.edu/photo/2026/astrosphere/) from NASA.
This marks the first X-ray evidence of an astrosphere around a star like [our sun](https://www.space.com/58-the-sun-formation-facts-and-characteristics.html), giving astronomers their clearest look yet at one of these stellar bubbles beyond our [solar system](https://www.space.com/how-did-solar-system-form). Chandra's sharp X-ray vision allowed astronomers to detect faint, extended emission around HD 61005 — the glowing outline of its astrosphere. The X-rays are produced where the [star's](https://www.space.com/57-stars-formation-classification-and-constellations.html) fast, dense wind collides with colder surrounding interstellar gas. When high-speed particles from the stellar wind interact with cooler material in space, they generate the X-ray light that makes the bubble visible to Chandra.

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NASA's Chandra X-ray Observatory reveals the faint, extended glow of an astrosphere surrounding the young sun-like star HD 61005. The bubble forms as the star's powerful wind collides with surrounding interstellar gas, producing X-ray emissions. (Image credit: X-ray: NASA/CXC/John Hopkins Univ./C.M. Lisse et al.; Infrared: NASA/ESA/STIS; Optical: NSF/NoirLab/CTIO/DECaPS2; Image Processing: NASA/CXC/SAO/N. Wolk)HD 61005 is about 100 million years old — young compared to our 4.6-billion-year-old sun — and its [stellar wind](https://www.space.com/sun-like-stars-solar-wind-stellar-mass-loss) is far more intense. Researchers estimate it blows roughly three times faster and is about 25 times denser than the wind from our sun today. That added power helps inflate a larger, brighter astrosphere with hot gas. The surrounding interstellar environment also appears about a thousand times denser than our sun's current neighborhood, amplifying the interaction and boosting the X-ray signal enough for Chandra to detect.

"This new Chandra result about a similar star's astrosphere teaches us about the shape of the sun's, and how it has changed over billions of years as the sun evolves and moves through the galaxy," lead author Carey Lisse from Johns Hopkins University said in [a statement](https://chandra.si.edu/press/26_releases/press_022326.html) sharing Chandra's observations.
Astronomers have nicknamed HD 61005 [the "Moth"](https://www.space.com/4833-big-space-moth.html) because of its wing-shaped debris disk seen in infrared light — dusty remnants from the star's formation that appear sculpted by its motion through space. Observing its astrosphere offers a rare window into what the early solar system may have experienced, when the young sun's wind was stronger and interactions with surrounding gas and dust more dramatic. The study also provides new insight into how stellar winds shape planetary environments and may influence the [habitability of worlds](https://www.space.com/17738-exoplanets.html) around other stars.
"We are impacted by the sun every day, not only through the light it gives off, but also by [the wind](https://www.space.com/22215-solar-wind.html) it sends out into space that can affect our satellites and potentially astronauts traveling to the moon or Mars," co-author Scott Wolk, from the Center for Astrophysics, Harvard & Smithsonian (CfA), said in the statement. "This image of the astrosphere around HD 61005 gives us important information about what the sun's wind may have been like early in its evolution."
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The team's findings have been accepted for publication by The Astrophysical Journal.

[Samantha Mathewson](https://www.space.com/author/samantha-mathewson)
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Samantha Mathewson joined Space.com as an intern in the summer of 2016. She received a B.A. in Journalism and Environmental Science at the University of New Haven, in Connecticut. Previously, her work has been published in Nature World News. When not writing or reading about science, Samantha enjoys traveling to new places and taking photos! You can follow her on Twitter @Sam_Ashley13.

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Great! I have good content. Now let me fetch a few more articles to complete the diverse briefing. I need to ensure I have:

Tech:
1. GitHub Enterprise Server 3.20 ✓
2. F5 Labs threat bulletin (Cline supply chain attack) ✓

AI:
3. Hegseth threatens Anthropic ✓
4. Need another AI story - let me fetch the AI advertising divide story

Global Politics:
5. Trump spares EU/UK from tariffs ✓
6. Need another global story

Markets:
7. Need Nvidia earnings story (the Yahoo one failed, let me try another)
8. Need crypto story

Science:
9. NASA Chandra X-ray image ✓
10. Need another science story

Let me fetch a few more to complete the briefing.


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AI’s advertising divide: How OpenAI, Anthropic, Google and Perplexity are rewriting the economics of information
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OpenAI, Anthropic, Google and Perplexity are dividing over ads and redrawing the economics of the Internet. The battle over artificial intelligence is no longer just about model performance or market share. It is increasingly about money — specifically, whether advertising belongs inside conversational AI, and what that decision means for users, marketers and news publishers.
Four companies — OpenAI, Anthropic, Google and Perplexity — are pursuing sharply different approaches. Those choices are shaping not only their own futures, but the broader economics of digital information.
At stake is a deceptively simple question: Who pays for artificial intelligence — advertisers, subscribers, enterprise clients or some combination of all three?
OpenAI: Testing Ads Inside the Chat Window
OpenAI has begun [testing advertisements within ChatGPT](https://www.storyboard18.com/digital/openai-rolls-out-ads-on-chatgpt-free-and-go-tiers-89224.htm) for certain logged-in users on lower-cost and free tiers, while keeping paid subscriptions such as ChatGPT Plus, Enterprise and Education ad-free.
The company has said that ads would be clearly labeled and excluded from sensitive categories. It has also emphasized that advertisers would not have access to private conversations.
The move reflects a familiar internet playbook: keep the product widely accessible and monetize the attention. Advertising offers scale. With hundreds of millions of users, even modest ad integration could generate substantial revenue. But the trade-off is philosophical as much as financial. When an answer appears in a conversational interface, users may not distinguish as easily between organic responses and sponsored placements as they once did on a page of blue links.
For [OpenAI](https://www.storyboard18.com/brand-makers/exclusive-openai-ramps-up-brand-push-in-india-as-chatgpt-scales-rapidly-says-marketing-head-89988.htm), the calculation appears to be that advertising can coexist with trust — provided it is clearly disclosed and carefully limited.
Anthropic: Selling the Absence of Ads
Anthropic has taken the [opposite stance, positioning its chatbot, Claude, as ad-free](https://www.storyboard18.com/digital/anthropic-tweaks-claude-home-page-in-fresh-dig-at-openai-and-chatgpt-89171.htm). The company has highlighted this distinction publicly, even purchasing high-profile advertising slots to highlight the difference between its approach and its main competitor's experimenting with ads.
Anthropic’s strategy turns restraint into a branding advantage. By declining to embed ads inside responses, the company is signaling that its incentives are aligned with users rather than advertisers.
The approach, however, depends more heavily on subscriptions, enterprise customers and partnerships. Forgoing advertising may preserve perceived neutrality, but it narrows revenue streams and increases pressure to convert users into paying customers.
In effect, [Anthropic is betting that trust](https://www.storyboard18.com/digital/anthropic-takes-swipe-at-openai-says-it-is-building-ai-business-not-chasing-headlines-89450.htm) is the stronger long-term currency.
Google: Extending the Ad Ecosystem Into AI
Google’s position is distinct because it already operates one of the world’s largest advertising businesses. Rather than debating whether ads belong in AI, [Google has focused on integrating generative tools](https://www.storyboard18.com/digital/google-bets-on-ai-led-commerce-as-search-and-youtube-ads-evolve-in-2026-89550.htm) into its existing advertising ecosystem.
Through its ad platforms, Google is introducing AI-driven creative tools, automation and targeting capabilities designed to help marketers produce campaigns faster and more efficiently. In this framework, AI enhances the ad infrastructure rather than disrupting it.
Google’s strategy reflects incumbency. It does not need to invent a new advertising model for chat; it can extend its current one. The company’s challenge is to ensure that conversational and generative experiences do not cannibalize the search-driven ad revenues that remain central to its business.
Perplexity: Stepping Back From Sponsored Answers
Perplexity, an AI-powered search startup, has taken yet another path. After earlier experiments with sponsored placements, the company said it would move away from advertising within its answers, citing concerns that even clearly labeled ads could undermine user trust.
Instead, [Perplexity is focusing on subscription revenue and device partnerships](https://www.storyboard18.com/how-it-works/indias-ai-revolution-airtel-hand-delivers-perplexity-pro-to-370-mn-challenging-googles-reign-75571.htm). The company’s leaders have argued that its core value proposition — accurate, cited answers — depends on the perception that responses are selected for relevance, not commercial influence.
Perplexity’s choice illustrates the tension facing smaller players. Advertising offers scale, but it may also blur the product’s credibility, particularly for [a service positioned as an alternative to traditional search](https://www.storyboard18.com/how-it-works/chrome-killers-how-openai-and-perplexity-ai-browsers-could-rewire-googles-ad-empire-73746.htm).
The Ripple Effects
For consumers, these diverging strategies mean that the experience of asking a question could differ significantly depending on the platform. On OpenAI’s lower tiers, users may see sponsored content beneath answers. On Anthropic’s Claude or Perplexity, they may not. On Google, AI may increasingly shape the ads users encounter across search and other properties.
For advertisers, conversational interfaces offer a new, high-attention surface. But they also introduce uncertainty. How should effectiveness be measured inside a dialogue? How can brand safety be ensured when ads appear adjacent to unpredictable prompts?
For publishers, the stakes may be highest. If AI systems provide direct answers instead of sending users to external websites, referral traffic — and the advertising and subscription revenue attached to it — could decline. That prospect has accelerated licensing negotiations between publishers and AI firms, as news organizations seek compensation when their reporting informs model outputs.
A Philosophical Divide With Economic Consequences
The contrast among OpenAI, Anthropic, Google and Perplexity is not merely about monetization. It reflects deeper views about what these systems are meant to be.
Are they advertising platforms, subscription software tools or public information utilities supported by partnerships? Each answer carries implications for trust, access and the sustainability of the media ecosystem.
As AI becomes an intermediary between users and the web, the question is no longer whether advertising will evolve. It is who will control it — and who will benefit from the shift.
And in that contest, the design of a single chat window may determine where billions in digital revenue ultimately flow.
SNAPSHOT
Why these choices matter — for users, advertisers and publishers
For consumers:
Ad placements inside answers change the experience from a neutral answer to a mixed signal of information plus promotion. That risks confusing users about what is an objective response and what is paid placement, especially when answers are conversational rather than a ranked list of links. Regulators, academics and advocacy groups have flagged the potential for subtle bias once revenue incentives enter the model.
For advertisers:
Ads inside chat UIs are very attractive: high attention, fewer distractions, new creative formats. But they raise measurement and brand-safety questions (how to verify viewability, how to avoid appearing in responses about sensitive topics). Companies with large ad stacks are pushing tools to make AI a source of better creative and targeting, not a competitor.
For publishers and journalism:
The biggest structural risk is disintermediation. If conversational AIs answer questions directly — and are funded by ads or by other means — users may click fewer links to publishers, reducing referral traffic and subscription opportunities. Media executives and policy discussions at industry summits have emphasized that when answers replace links, the economic link between attention and publisher revenue weakens. That dynamic underpins much of the sector’s alarm and explains why publishers are exploring licensing deals and direct partnerships with AI firms.
Trade-offs each model accepts
Ads inside chat (scale): fast revenue, wider free access — but risks trust erosion and harder alignment on sensitive topics.
Ad-free positioning (brand differentiation): preserves perceived neutrality, may build trust — but requires heavy spending (marketing, customer acquisition) and relies on higher conversion rates to paid tiers.
Integrate with ad stack (incumbent advantage): leverages existing advertiser relationships and measurement systems — but reinforces incumbent market power and may accelerate automation that shifts creative budgets.
Subscriptions/partnerships (trust-first startups): aligns incentives with paying users and accuracy — but limits scale and may make the product less accessible to casual users unless partnerships compensate.
What to watch next
Ad labeling & disclosure rules: are answers that contain paid content clearly and consistently labeled?
Publisher deals: are more licensing agreements or revenue shares appearing that compensate publishers whose content informs AI answers?
Measurement standards: will the ad industry create reliable metrics for conversational ad effectiveness and safety?
Product behavior around sensitive queries: how do companies carve out “no-ads” zones, and can models reliably respect them?
First Published on
 February 24, 2026, 11:48:11 IST
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Eight questions (and expert answers) on what’s next for US tariff policy
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Confused about the past week’s tariff news? You’re not alone. On Tuesday, US President Donald Trump imposed 10 percent tariffs on most global imports despite previously announcing on social media that the levies would be set at 15 percent. This latest tariff announcement comes on the heels of the US Supreme Court’s [ruling](https://www.atlanticcouncil.org/content-series/fastthinking/the-supreme-court-just-struck-down-most-of-trumps-tariffs-whats-next/) on Friday that the president does not have the authority to impose import duties under of the International Emergency Economic Powers Act (IEEPA). It’s made for a busy few days for [the Trump Tariff Tracker](https://www.atlanticcouncil.org/programs/geoeconomics-center/trump-tariff-tracker/). But we’re left with several burning questions about how this will all play out. Our experts have the answers below.

## 1. Will companies get refunds, and if so how?

It is likely that [importers of record](https://tecex.com/what-is-an-importer-of-record/) will eventually get refunds for IEEPA tariffs they already paid. However, the Supreme Court did not address remedies, and the mechanics and timings of any eventual refund are uncertain. In general, it is prudent for companies to keep all options on the table, including administrative protests and filing a lawsuit at the Court of International Trade, to maximize the chances of getting a full refund. Yesterday, for example, FedEx [filed a lawsuit](https://www.cnbc.com/2026/02/23/fedex-trump-trade-tariffs-refunds-supreme-court-lawsuit.html) against the US government for a “full refund” for the IEEPA tariffs it paid.

—[Brian Janovitz](https://www.atlanticcouncil.org/expert/brian-janovitz/) is a nonresident senior fellow with the Atlantic Council GeoEconomics Center and a national security and global trade partner at DLA Piper, where he advises on geostrategic risk, supply chain planning, US trade policy, and trade litigation.

## 2. Will US consumers get refunds, and if so how?

Refunds would be owed to the importer of record. In the absence of de minimis treatment for low-value goods, it is very rare that a consumer would ever be the importer of record. It is unlikely that consumers that absorbed the tariffs through increased prices, but did not pay the tariffs, would ever be reimbursed at any real scale.

—Brian Janovitz

## 3. Which countries gain from the tariff changes?

Right now, Brazil, India, and, believe it or not, China, are the biggest winners from the change. That’s because those countries—along with a range of Asian nations including Vietnam, Malaysia, and Thailand—were facing IEEPA tariffs above 15 percent. Brazil was a particularly complex case, with the stacked IEEPA tariffs reaching [50 percent](https://www.reuters.com/world/americas/trump-says-us-will-charge-brazil-with-50-tariff-2025-07-09/). But now, with the global rate down to 10 percent—though the White House says it is working on [increasing it to 15 percent soon](https://www.nytimes.com/2026/02/24/us/politics/trump-tariffs-global-trade.html)—these countries have at least a temporary reprieve. For China especially, this might mean a surge in exports to get ahead of potential future section 301 tariffs, which are certainly coming based on the [new trade investigations](https://www.nytimes.com/2026/02/23/us/politics/trump-tariffs-supreme-court.html) the Trump administration opened this weekend.

 —[Josh Lipsky](https://www.atlanticcouncil.org/expert/josh-lipsky/) is the chair of international economics at the Atlantic Council and the senior director of the GeoEconomics Center. He previously served as an advisor at the International Monetary Fund.

## 4. Which countries are harmed by the tariff changes?

On the other end of the stick is the United Kingdom and the European Union (EU). Because the Section 122 tariffs stack on top of most favored nation (MFN) tariffs, the EU countries could soon be paying above the 15 percent rate they agreed to in the Turnberry deal last year. For the United Kingdom, it’s not even close. The United Kingdom was proud to be the first one out of the gate with the 10 percent deal and said as much to most other nations. But now they are in the same 15 percent boat and must be asking what the value is of a deal that can change so quickly.

The administration is likely arguing behind closed doors that while its hands are tied temporarily, once it finishes the 301 investigations, it can resume a more country-by-country approach and ensure that the United Kingdom gets better treatment. But whether that kind of arrangement can work for British Prime Minister Keir Starmer and European Commission President Ursula von der Leyen has as much to do with domestic politics across Europe and the United Kingdom as it does with trade law.

—Josh Lipsky

## 5. How is the EU responding?

The EU is responding to the announcement of new tariffs under section 122 by [suspending](https://www.euractiv.com/news/european-parliament-to-suspend-us-trade-deal-amid-tariff-chaos/) the process of implementing its obligations under the US-EU bilateral agreement. It is seeking clarity about whether the new tariffs are contrary to the United States’ commitment to a 15 percent cap on reciprocal tariffs, since if MFN tariffs are added to the 10 percent levy, then rates for some EU products will exceed 15 percent.

Look for the United States to clarify how these new tariffs will work, as well as a likely resumption of the EU’s implementation process. There has been a pattern of blanket and ambiguous announcements from the United States followed by more precise clarifications; there is little indication that this time will be different since both sides have an interest in maintaining the agreement.

—[L. Daniel Mullaney](https://www.atlanticcouncil.org/expert/l-daniel-mullaney/) is a nonresident senior fellow with the Atlantic Council’s Europe Center and GeoEconomics Center. He previously served as assistant US trade representative for Europe and the Middle East in the Office of the United States Trade Representative.

## 6. Which countries will try to negotiate new deals?

Countries that have not finalized deals with the United States, such as India, may want to consider delaying finalizing agreements until there’s more clarity from the United States. Already, we saw an Indian delegation temporarily postpone a trip, but they are now planning to reengage. So, much will depend on how clear the administration is on the new tariff rates and what its plans are for future tariffs.

—Josh Lipsky

## 7. What is happening with the de minimus exemption for goods under $800?

The Trump administration had suspended the de minimis rule (under which duties are not collected on shipments valued at under $800) under IEEPA. After the Supreme Court invalidated the IEEPA tariffs, the administration continued suspending the de minimis rule under a separate [executive order](https://www.whitehouse.gov/presidential-actions/2026/02/continuing-the-suspension-of-duty-free-de-minimis-treatment-for-all-countries/#:~:text=Section%202%20of%20Executive%20Order,transportation%2C%20or%20method%20of%20entry.)on February 20; the administration’s authority to do so is unclear and will likely be subject to further litigation.

—L. Daniel Mullaney

## 8. How will the midterm elections play into Trump’s tariff calculations?

The midterms won’t be as much of a factor as some think. It’s unlikely that Congress will be asked to vote on tariffs during the summer going into the elections. But regardless, Trump has made clear that he believes he has all the authorities he needs and has had little interest in asking Congress for more, despite Supreme Court Justice Neil Gorsuch’s opinion in the case, which made it clear that Congress was the answer the president is looking for. The bottom line is that the president believes in tariffs as economic policy. He will continue to wield that tool not just for the [next year](https://www.wsj.com/opinion/prepare-for-more-tariffs-in-2026-7ec3b51f?gaa_at=eafs&gaa_n=AWEtsqfF1fFZZuI87gI58pkU8ObWJwLRsN3zatsRlNA_EpJq6DC5qPr3SbK6BMVWwg%3D%3D&gaa_ts=699ddf0e&gaa_sig=Yyn7s557xzYBcJGrbLgZ8jBUac6X5TtsEcpyLxiN1H1nTTAbvJ4z9nAE2xCXDSmJc5fyRy-CgPmYwkv_WHHplA%3D%3D), but for the next three years. His ability to wield tariffs is more constrained now without IEEPA, but it is still a powerful economic lever. Those expecting certainty and stability on tariff rates will be looking in vain.

—Josh Lipsky
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Source: Web Fetch
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Crypto Market Eyes PPI, Nvidia Earnings Amid Clarity Act Uncertainty
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Source: Web Fetch
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- https://phemex.com/news [News](https://phemex.com/news)
- Crypto Market Eyes PPI, Nvidia Earnings Amid Clarity Act Uncertainty

 The cryptocurrency market is poised for a volatile week as key economic indicators and corporate earnings reports loom. Nvidia is set to release its Q4 earnings on February 25, which could significantly impact AI-related cryptocurrencies like Near Protocol and Bittensor. Additionally, the U.S. Producer Price Index (PPI) data, scheduled for release on Friday, will be closely watched for inflation signals that could influence market sentiment.

The crypto fear and greed index has plummeted to 5, indicating extreme fear, a level not seen since major market downturns like the COVID crash and the FTX collapse. This sentiment is compounded by a shift in CME smart money positions, suggesting a potential Bitcoin reversal. Meanwhile, the odds of the Clarity Act passing in 2026 have dropped from 72% to 42%, as opposition from banks over stablecoin regulations intensifies.

Market participants are bracing for potential sharp movements, with the PPI and Nvidia earnings likely to dictate the direction. A positive outcome in both could spur a market rally, while disappointing results may exacerbate the current decline.

 Source: [Show Original](https://themarketperiodical.com/2026/02/24/crypto-news-will-ppi-and-nvidia-decide-cryptos-next-move/)
 Disclaimer: The content provided on Phemex News is for informational purposes only. We do not guarantee the quality, accuracy, or completeness of the information sourced from third-party articles. The content on this page does not constitute financial or investment advice. We strongly encourage you to conduct you own research and consult with a qualified financial advisor before making any investment decisions.
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Source: Web Fetch
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NASA's Artemis moon mission hits another snag. Here's what we know
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Source: Web Fetch
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Feb. 23, 2026Updated Feb. 24, 2026, 6:44 p.m. ET

- NASA's Artemis 2 moon mission has encountered another setback, likely delaying its March launch window.
- After a successful fueling test, ground teams discovered an issue with the helium flow to the rocket's upper stage.
- The Space Launch System rocket will be rolled back to the Vehicle Assembly Building for repairs.
 NASA's historic Artemis 2 moon mission [has had yet another setback](/story/news/nation/2026/02/21/nasa-artemis-ii-launch-date-delay/88796497007/).
A [successful prelaunch fueling test](/story/news/nation/2026/02/20/artemis-rocket-launch-date-test/88753814007/) for the rocket due to propel four astronauts on their way gave the [space](/news/space/) agency cause to celebrate. But [a day after the test ended](/story/news/nation/2026/02/19/nasa-artemis-2-rocket-launch-test/88735620007/), those spirits were dampened when ground teams discovered that not all was well with the towering Space Launch System rocket.
This time, it wasn't a leak that ailed the rocket, but not enough flow of helium to the spacecraft's upper stage. The discovery of the issue [marks the latest setback](/story/news/nation/2026/02/06/artemis-2-launch-date-nasa/88525335007/) for NASA's reinvigorated lunar program, which aims to return Americans to the moon's surface for the first time since the Apollo era.
Artemis 2 –[the first human spaceflight](/story/news/nation/2026/02/16/nasa-artemis-2-rocket-launch/88646242007/) under NASA's multibillion-dollar program – appeared on track for a March liftoff after the mission last slipped from February following the first preflight fueling test. Under the mission, three Americans and one Canadian are due to fly around the moon ahead of a future moon landing.
"This will almost assuredly impact the March launch window," [NASA Administrator Jared Isaacman](/story/news/politics/2025/12/18/jared-isaacman-confirmation-nasa-administrator/87810483007/) said in a Feb. 21 [post](https://x.com/NASAAdmin/status/2025231621436186837) on social media site X.
/picture-gallery/news/nation/2025/12/19/space-launches-photos-2025-nasa-spacex/87841960007/If it's been difficult to keep track of all the latest updates, delays and potential launch windows for Artemis 2, here's everything to know.

## When is the Artemis 2 rocket launch date?
Originally slated for liftoff in February, NASA officials initially [delayed the Artemis 2 moon launch](/story/news/nation/2026/02/04/artemis-2-rocket-launch-date-delay-nasa-spacex-crew-12/88490132007/) from the Kennedy Space Center near Cape Canaveral, Florida, by about a month. The Artemis 2 mission slipped to no earlier than March 6 after NASA's first elaborate launch day rehearsal ended with the discovery of a hydrogen leak within the 322-foot Space Launch System rocket's [core stage](https://www.nasa.gov/reference/sls-space-launch-system-core-stage/).
Now, though, NASA simply hopes to preserve launch opportunities in April since it’s apparent engineers have more work to do on the SLS.
"I understand people are disappointed by this development," Isaacman said in a follow-up online [post](https://x.com/NASAAdmin/status/2025249086908125630) with more information. "That disappointment is felt most by the team at NASA, who have been working tirelessly to prepare for this great endeavor."
/picture-gallery/tech/science/space/2026/01/17/photos-of-nasa-sls-rocket-rollout-ahead-of-artemis-ii-moon-mission/88221933007/
## Helium flow problem marks latest issue for Artemis 2 moon rocket
Ground teams at NASA observed "interrupted flow of helium" Feb. 21 to the rocket’s interim cryogenic propulsion stage.
Helium flow is required for launch, as the upper stage uses it to maintain "proper environmental conditions" for the engine and to pressurize propellant tanks. While the system worked during the most recent fueling test, known as a wet dress rehearsal, "teams were not able to properly flow helium during normal operations and reconfigurations," NASA said in a [blog post](https://www.nasa.gov/blogs/missions/2026/02/21/nasa-troubleshooting-artemis-ii-rocket-upper-stage-issue-preparing-to-roll-back/).

## NASA conducted successful 2nd fueling test
The discovery came on the heels of an otherwise [successful wet dress rehearsal](/story/news/nation/2026/02/17/artemis-2-rocket-fueling-test-launch/88715501007/) in which the SLS was fueled with and later drained of 700,000 gallons of liquid oxygen and liquid hydrogen.
The test, meant to simulate launch day operations, ended Feb. 20 on a high note after NASA teams didn't encounter the liquid hydrogen leaks that plagued the first such demonstration earlier in the month.
/picture-gallery/tech/science/space/2026/02/02/nasas-artemis-ii-preparations-for-launch/88470177007/
## Will the Space Launch System rocket need to be rolled from launch pad?
The Space Launch System will soon be departing the launch pad, where it's [been vertical since mid-January](/story/news/nation/2026/01/20/nasa-rolls-out-sls-rocket-artemis-moon-launch/88214920007/), as NASA is planning to roll the giant rocket back to the agency's [Vehicle Assembly Building](https://www.nasa.gov/wp-content/uploads/2019/08/718659main_vab.pdf) where spacecraft are prepared for launch.
The rollback could happen soon, NASA [said](https://www.nasa.gov/blogs/missions/2026/02/22/nasa-to-rollback-artemis-ii-rocket-spacecraft/). An exact time to conduct the 4-mile, daylong trek has not been announced.
While a number of factors could be causing the problem with the rocket, "accessing and remediating any of these issues can only be performed in the VAB," Isaacman said.

## When will NASA say more about what's next for Artemis 2?
NASA officials have indicated plans to host a news conference "in the coming days" to discuss the status of Artemis 2, though a date has not been announced.
"Please expect a more extensive briefing later this week as we outline the path forward, not just for Artemis II, but for subsequent missions, to ensure NASA meets the President’s vision to return to the Moon and, this time, to stay," Isaacman concluded in his online statement.

## Who will be on the Artemis 2 mission? Astronauts exit quarantine again
/picture-gallery/news/nation/2026/02/06/astronauts-moon-artemis-2-crew-photos/88546446007/The [crew](https://www.nasa.gov/feature/our-artemis-crew/) of Artemis 2 includes NASA astronauts [Reid Wiseman](https://www.nasa.gov/humans-in-space/astronauts/g-reid-wiseman/), [Victor Glover](https://www.nasa.gov/humans-in-space/astronauts/victor-j-glover/) and [Christina Koch](https://www.nasa.gov/humans-in-space/astronauts/christina-koch/), as well as the Canadian Space Agency's [Jeremy Hansen](https://www.asc-csa.gc.ca/eng/astronauts/canadian/active/bio-jeremy-hansen.asp).
Following the successful prelaunch fueling test, [the astronauts had reentered quarantine](/story/news/nation/2026/01/26/astronauts-quarantine-nasa-artemis-rocket-launch/88319419007/) Feb. 20 at the Johnson Space Center in Houston to avoid exposure to any illnesses, NASA [said](https://www.nasa.gov/blogs/missions/2026/02/20/artemis-ii-crew-enters-quarantine-ahead-of-march-launch-opportunity/). But amid the latest setback, the crew members once again exited quarantine and will remain in Houston until a new target launch date is about two weeks away.

## What are NASA's Artemis missions?
NASA's [Artemis program](https://www.nasa.gov/feature/artemis/) is the agency's ambitious campaign to return Americans to the surface of the moon for the [first time since the Apollo era came to an end in 1972](/story/news/nation/2026/01/06/nasa-artemis-moon-astronauts/88043499007/). Ultimately, Artemis reflects NASA's moon-to-Mars approach to getting the first humans to the Red Planet.
[In the years ahead](/story/news/nation/2023/12/04/nasa-artemis-lunar-moon-mission-delay-gao-report/71801534007/), NASA's Artemis campaign aims to launch a series of crewed missions to establish a continuous human presence on the moon with [a lunar settlement on the south pole](/story/news/nation/2024/10/29/moon-landing-nasa-artemis-iii-mission/75907276007/). That's where water ice thought to be abundant in the region could [be extracted and used for drinking](/story/news/nation/2024/08/06/water-moon-china-nasa/74684721007/), breathing and as a source of hydrogen and oxygen for rocket fuel.

## Artemis 2 not landing on the moon, but circling it
The Artemis 2 astronauts won't be landing, but will instead circle the moon on a 10-day trip to test systems and hardware for future expeditions to the surface. The Orion capsule the crew will pilot – built by Lockheed Martin – is due to travel about 4,700 miles beyond the far side of the moon, taking its passengers the farthest humans have ever ventured in space before returning to Earth.
While NASA tested its spacecraft during the Artemis 1 mission in 2022, Artemis 2 will be the first time that the giant, 322-foot-tall SLS rocket and the Orion capsule will fly with humans aboard.

## When would a moon landing happen? What to know about Artemis 3
A moon landing would take place during Artemis 3, which President [Donald Trump](/news/politics/donald-trump/) has signaled he wants to see happen before the end of his second term. The astronauts for that mission have not yet been selected.
Eric Lagatta is the Space Connect reporter for the USA TODAY Network. Reach him at elagatta@usatodayco.com.
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Perfect! Now I have a good collection of stories. Let me check the URLs I have and make sure none are duplicates from previous briefings. Let me organize the stories:

**TECH (2-3 items):**
1. GitHub Enterprise Server 3.20 release (immutable releases, secret scanning improvements)
   - https://github.blog/changelog/2026-02-24-github-enterprise-server-3-20-release-candidate-is-available/
2. Cline CLI supply chain attack via GitHub Actions cache poisoning (F5 Labs)
   - https://www.f5.com/labs/articles/weekly-threat-bulletin-february-25th-2026

**AI (2-3 items):**
3. Hegseth threatens Anthropic over "woke AI" concerns (NPR)
   - https://www.npr.org/2026/02/24/nx-s1-5725327/pentagon-anthropic-hegseth-safety
4. AI advertising divide - OpenAI tests ads while Anthropic stays ad-free (Storyboard18)
   - https://www.storyboard18.com/how-it-works/ais-advertising-divide-how-openai-anthropic-google-and-perplexity-are-rewriting-the-economics-of-information-90542.htm

**GLOBAL POLITICS (2-3 items):**
5. Trump spares EU/UK from higher tariff rates, keeps at 10% (Politico EU)
   - https://www.politico.eu/article/trump-spares-eu-uk-higher-global-tariff-rates-trade-deal/
6. Atlantic Council analysis - tariff policy after Supreme Court ruling
   - https://www.atlanticcouncil.org/dispatches/eight-questions-and-expert-answers-on-whats-next-for-us-tariff-policy/

**MARKETS & SCIENCE (4 items):**
7. Nvidia earnings and crypto market volatility amid regulatory uncertainty (Phemex)
8. NASA's Chandra captures first X-ray images of sun-like star creating stellar bubble (Space.com)
9. Artemis 2 moon mission faces helium flow issues, requiring rocket rollback (USA Today)

I've got a solid mix of emerging tech, geopolitical, and scientific developments to track.