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Space Exploration News 1 December 2025 - 5 December 2025

Interstellar Comet 3I/ATLAS: New Hubble Image, JUICE Flyby and ‘Ice Volcanoes’ Reveal a Peculiar Alien World

Interstellar Comet 3I/ATLAS: New Hubble Image, JUICE Flyby and ‘Ice Volcanoes’ Reveal a Peculiar Alien World

Published: 5 December 2025 A once‑in‑a‑lifetime interstellar visitor hits the headlines again Interstellar comet 3I/ATLAS has just delivered a fresh burst of science – and controversy. Over the last few days, NASA’s Hubble Space Telescope has captured a new high‑resolution image of the comet, ESA’s JUICE spacecraft has beamed back a surprise navigation‑camera view showing multiple tails, and scientists in Europe have posted a preprint arguing that the object may be erupting in cryovolcanoes – “ice volcanoes” – on its surface.NASA Science+2Sci.News: Breaking Science News+2 At the same time, Harvard astrophysicist Avi Loeb has published new analyses of the latest
5 December 2025
Interstellar Comet 3I/ATLAS: Hubble’s New Image, Psyche’s Data and ‘Ice Volcano’ Hints as of December 5, 2025

Interstellar Comet 3I/ATLAS: Hubble’s New Image, Psyche’s Data and ‘Ice Volcano’ Hints as of December 5, 2025

On December 5, 2025, astronomers around the world are laser‑focused on one object: interstellar comet 3I/ATLAS, only the third known visitor from another star system to sweep through our solar neighborhood. Fresh Hubble images, new spacecraft observations and a provocative study about possible “ice volcanoes” are turning this icy wanderer into the most closely watched comet in years. NASA Science+1 This article pulls together the latest developments up to December 5, 2025, and explains what they tell us about where 3I/ATLAS came from, what it’s made of, and how (and whether) you can see it in the sky. 1. What is interstellar comet 3I/ATLAS? 3I/ATLAS
5 December 2025
NASA News Today, December 5, 2025 – Roman Space Telescope Completed, Artemis Moon Missions, Comet 3I/ATLAS and Satellite Swarm Threats

NASA News Today, December 5, 2025 – Roman Space Telescope Completed, Artemis Moon Missions, Comet 3I/ATLAS and Satellite Swarm Threats

Published December 5, 2025 NASA is closing out 2025 with a flood of major developments: its next flagship space telescope is now fully assembled, scientists are warning that satellite swarms could seriously damage future space astronomy, an interstellar comet is under intense scrutiny, and new results are reshaping our understanding of asteroids, supernovae, Earth’s weather and even aircraft safety. Here’s a detailed roundup of the key NASA stories making headlines as of December 5, 2025, curated for readers of Google News and Discover. Roman Space Telescope: NASA’s Next Flagship Is Fully Assembled NASA has confirmed that construction of the Nancy Grace Roman
5 December 2025
NASA Warns Starlink-Style Satellite Megaconstellations Could Contaminate Nearly All Future Space Telescope Images

NASA Warns Starlink-Style Satellite Megaconstellations Could Contaminate Nearly All Future Space Telescope Images

Published: December 5, 2025 Key takeaways What’s new: a landmark Nature study raises the alarm On December 3, 2025, Nature published a peer‑reviewed paper titled “Satellite megaconstellations will threaten space‑based astronomy,” authored by NASA researchers Alejandro S. Borlaff, Pamela M. Marcum and Steve B. Howell. Nature Their work tackles a question that, until now, had mainly worried ground‑based observatories: what happens to space telescopes when low‑Earth orbit fills up with hundreds of thousands of bright satellites? Using filings to regulators such as the US Federal Communications Commission (FCC) and the International Telecommunication Union (ITU), the team modeled a future in which LEO hosts around half a million satellites by the
5 December 2025
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Interstellar Comet 3I/ATLAS: December 2025 Close Approach, New Hubble Images and ‘Ice Volcano’ Surprises

Interstellar Comet 3I/ATLAS: December 2025 Close Approach, New Hubble Images and ‘Ice Volcano’ Surprises

Interstellar comet 3I/ATLAS – also known as C/2025 N1 (ATLAS) – has just become the most closely watched visitor in the night sky. On 4 December 2025, a wave of new observations and images from NASA and ESA revealed that this third-known interstellar object is far more active and scientifically intriguing than astronomers first expected. NASA Science+2European Space Agency+2 Fresh Hubble photos, a surprise “teaser” image from ESA’s Juice spacecraft and new reports of vigorous activity around the comet are converging just as 3I/ATLAS heads toward its closest approach to Earth later this month, offering scientists and skilled amateur astronomers
4 December 2025
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Interstellar Comet 3I/ATLAS: Ice Volcanoes, Radio ‘Signals’ and a Planetary‑Defense Drill as It Skims Past Earth This Month

Interstellar Comet 3I/ATLAS: Ice Volcanoes, Radio ‘Signals’ and a Planetary‑Defense Drill as It Skims Past Earth This Month

Updated: December 4, 2025 A once‑in‑a‑lifetime interstellar visitor is putting on its strangest act yet. New observations released in the last few days suggest that the comet 3I/ATLAS – only the third known object to enter our solar system from another star – is: And later this month, on December 19, 2025, 3I/ATLAS will make its closest approach to Earth – still a very safe 1.8 astronomical units (about 270 million km / 170 million miles) away, but bright enough for dedicated observers with telescopes to chase. IFLScience+1 Here’s where the science stands today, and how you can follow this interstellar comet from your own backyard. What
4 December 2025
NASA’s Psyche Spacecraft Locks Onto Interstellar Comet 3I/ATLAS as Global Planetary‑Defense Drill Begins

NASA’s Psyche Spacecraft Locks Onto Interstellar Comet 3I/ATLAS as Global Planetary‑Defense Drill Begins

Published: December 3, 2025 NASA has just added a dramatic new chapter to the story of interstellar comet 3I/ATLAS. Today, the agency revealed that its Psyche spacecraft — currently en route to a metal‑rich asteroid — has captured detailed observations of the comet, sharpening its trajectory and feeding into a solar‑system‑wide campaign that now includes a United Nations–backed planetary‑defense exercise. NASA Science+2NASA Science+2 At the same time, fresh science is pouring in: “ice volcanoes” erupting from the comet’s surface, radio signals revealing its chemistry, and Mars‑orbiting spacecraft narrowing its path by a factor of ten.Universe Today+3Live Science+3Discover Magazine+3 Below is a
3 December 2025
Interstellar Comet 3I/ATLAS: Cryovolcanoes, Expanding Coma and ‘Heartbeat’ Pulses – Latest Updates as of December 3, 2025

Interstellar Comet 3I/ATLAS: Cryovolcanoes, Expanding Coma and ‘Heartbeat’ Pulses – Latest Updates as of December 3, 2025

Published: December 3, 2025 Interstellar comet 3I/ATLAS – only the third known visitor from another star system – is putting on one of the strangest shows astronomers have ever seen. In the last 48 hours alone, new research and images have revealed: All of this is happening as 3I/ATLAS climbs back into the pre‑dawn sky after whipping around the Sun in late October and heading toward its closest approach to Earth on December 19, 2025, at a safe distance of about 170 million miles (270 million km). EarthSky+1 Here’s what you need to know today about this once‑in‑a‑lifetime interstellar visitor. What Is Interstellar Comet 3I/ATLAS?
3 December 2025
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ESA Offers €23,000 for 100 Days in Isolation: How to Apply for DLR’s New ‘Test Astronaut’ Studies

ESA Offers €23,000 for 100 Days in Isolation: How to Apply for DLR’s New ‘Test Astronaut’ Studies

The European Space Agency (ESA) and the German Aerospace Center (DLR) are looking for volunteers willing to live like astronauts on a simulated Mars mission – or spend 60 days in bed – for up to €23,000 in compensation. Cologne, Germany – December 3, 2025. The dream of flying to Mars is still years away, but for six people, the next best thing could start much sooner – in a sealed lab in Cologne. ESA and DLR are currently recruiting “test astronauts” for two ambitious research studies that will simulate the physical and psychological challenges of long-duration spaceflight on Earth.
3 December 2025
Interstellar Comet 3I/ATLAS: Latest Discoveries, Alien Debate and How to See It in December 2025

Interstellar Comet 3I/ATLAS: Latest Discoveries, Alien Debate and How to See It in December 2025

Interstellar comet 3I/ATLAS is turning December 2025 into one of the most dramatic months in modern astronomy. The icy visitor from another star system is firing powerful jets, showing signs of possible “ice volcanoes,” pulsing with a 16‑hour light pattern and inspiring everything from rigorous science to wild alien‑probe speculation. At the same time, NASA and ESA have tightened its trajectory, confirmed it poses no threat to Earth, and used it as a live-fire drill for planetary‑defense planning. NASA Science+2Universe Today+2 Here’s a detailed look at what 3I/ATLAS is, what the newest data show as of 2 December 2025, why some people think it might
2 December 2025
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Interstellar Comet 3I/ATLAS Makes Closest Approach to Earth on December 19, 2025 — How to See It and Why It Matters

Interstellar Comet 3I/ATLAS Makes Closest Approach to Earth on December 19, 2025 — How to See It and Why It Matters

Updated December 1, 2025 On Friday, December 19, 2025, an ancient visitor from another star system will make its closest pass to Earth. Interstellar comet 3I/ATLAS will sweep by at a distance of about 170 million miles (270 million kilometers) — nearly twice as far away as the Sun and more than 700 times the distance to the Moon.NASA Science+1 It poses no danger whatsoever, but it does offer a once‑in‑a‑lifetime chance: a front‑row seat to the third confirmed interstellar object in history, after 1I/ʻOumuamua and 2I/Borisov.NASA Science+1 Now through mid‑December is the prime observing window for skywatchers with telescopes and for the global fleet of
2 December 2025
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Chernobyl’s ‘Radiation‑Eating’ Black Fungus Could Help Protect Astronauts on the Moon and Mars

Chernobyl’s ‘Radiation‑Eating’ Black Fungus Could Help Protect Astronauts on the Moon and Mars

Scientists are racing to understand a mysterious fungus thriving in Chernobyl’s ruins – and whether its superpower can be turned into a shield for deep‑space explorers. Why a Chernobyl fungus is suddenly everywhere in the news Over the last few days, a cluster of high‑profile stories has pushed an obscure organism into the global spotlight: At the same time, new peer‑reviewed research in 2025 has shown that fungal melanin – the dark pigment that makes these organisms black – can protect advanced plastics from space radiation when tested in low Earth orbit, giving the media narrative real scientific teeth. PubMed+1
1 December 2025
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Stock Market Today

Alphabet stock drops for a fourth straight day as AI spending jitters linger

Alphabet stock drops for a fourth straight day as AI spending jitters linger

7 February 2026
Alphabet shares fell 2.53% to $322.86 Friday, marking a fourth straight decline as investors questioned heavy AI-related spending. The Nasdaq slipped Thursday after Alphabet detailed up to $185 billion in capex, while the Dow and S&P 500 rose Friday on chipmaker gains. U.S. markets reopen Monday, with attention on Alphabet’s outlook and upcoming jobs and inflation data.
BBAI stock jumps 16% into BigBear.ai share-vote week — what to watch next

BBAI stock jumps 16% into BigBear.ai share-vote week — what to watch next

7 February 2026
BigBear.ai Holdings shares surged 15.7% Friday to $4.72 ahead of a key shareholder vote on doubling authorized shares to 1 billion. Options trading was heavy, with a put/call ratio of 0.19. The company recently announced deals in AI customs technology and a partnership with Abu Dhabi’s AD Ports Group. The special meeting is set for Feb. 18, with online voting open until late Feb. 17.
American Airlines stock jumps nearly 8% as airlines rally — what to watch next week

American Airlines stock jumps nearly 8% as airlines rally — what to watch next week

7 February 2026
American Airlines shares jumped 7.6% to $15.24 Friday, rebounding with a broad rally that sent the Dow past 50,000 for the first time. Investors are watching the carrier’s battle with United at Chicago O’Hare, where a summer capacity surge could trigger a fare war. American also announced new Philadelphia–Porto service for 2027 and launched a centennial inflight menu.
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