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Astrobiology News 10 September 2025 - 8 November 2025

Hidden Heat at Enceladus’ North Pole Bolsters Case for Life: Cassini Data Show Stable Ocean in New Study (Nov. 7, 2025)

Hidden Heat at Enceladus’ North Pole Bolsters Case for Life: Cassini Data Show Stable Ocean in New Study (Nov. 7, 2025)

Meta description: A new analysis of NASA’s Cassini data finds excess heat at Enceladus’ north pole, balancing previously known heat loss in the south. The results, published Nov. 7, 2025 in Science Advances, suggest the icy moon’s global ocean has remained stable over geologic time—strengthening its habitability. Science+3SciTechDaily+3Space+3 Publish date: November 7, 2025 What’s new A peer‑reviewed study released today in Science Advances reports the first clear evidence of endogenic (internal) heat flow at Enceladus’ north pole. Until now, direct heat loss had only been measured at the south pole, where Cassini discovered dramatic plumes in 2005. The new result
8 November 2025
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Rare Interstellar Comet 3I/ATLAS – a 10-Billion-Year-Old Time Capsule – Flies Past Mars

Alien Comet 3I/ATLAS Is Spewing Water Like a Fire Hose — And Scientists Are Stunned

These astounding discoveries come from coordinated observations worldwide. Below we delve into the details: what we’ve learned about 3I/ATLAS, how it compares to other interstellar visitors, and why scientists are so excited. What Is 3I/ATLAS? A Rare Interstellar Comet 3I/ATLAS (sometimes simply called “ATLAS”) is an interstellar comet – a chunk of ice and rock that formed around a distant star and is now speeding through our Solar System on a one-way trip. It was first spotted on July 1, 2025, by the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in Chile ts2.tech. Follow-up analyses quickly confirmed its hyperbolic orbit
12 October 2025
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Interstellar Comet 3I/ATLAS Shrouded in CO₂ Fog – NASA’s SPHEREx Reveals a Cosmic Visitor’s Secrets

Is 3I/ATLAS an Interstellar Messenger? New Findings Debunk Alien Rumors but Reveal an Ancient, Carbon‑Rich Comet

A Rare Interstellar Visitor When astronomers with the Asteroid Terrestrial‑impact Last Alert System (ATLAS) noticed an object with an extraordinarily high orbital eccentricity racing through the outer solar system in June 2025, they immediately suspected an interstellar origin. Follow‑up observations confirmed that the body, now designated 3I/ATLAS, follows a hyperbolic path and moves faster than any known comet, approximately 210 000 km per hour esa.int. Unlike periodic comets, this object will never return once it leaves the Sun’s gravitational grasp, making it only the third confirmed interstellar visitor after ʻOumuamua in 2017 and 2I/Borisov in 2019 science.nasa.gov. The comet’s trajectory takes it between
5 October 2025
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Life on Mars? Saturn’s Surprise and More – The Biggest Science Breakthroughs (Sept 21–22, 2025)

Life on Mars? Saturn’s Surprise and More – The Biggest Science Breakthroughs (Sept 21–22, 2025)

Key Facts: Astronomy & Space Webb Hints at Atmosphere on an Earth-Like Exoplanet: Astronomers using NASA’s James Webb Space Telescope announced intriguing results from the TRAPPIST-1 planetary system. JWST observed the Earth-sized exoplanet TRAPPIST-1e (about 41 light-years away) as it passed in front of its star, and the data “hints that Trappist-1e may have an atmosphere” scitechdaily.com. This planet lies in the star’s temperate habitable zone, where liquid water could exist. If further Webb observations confirm an atmosphere, it would mark the first-ever detection of an atmosphere on a rocky world in a star’s habitable zone scitechdaily.com – a major
22 September 2025
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Leopard-Spotted Mars Rock Could Hold ‘Clearest Sign of Life’ Yet, NASA Says

Leopard-Spotted Mars Rock Could Hold ‘Clearest Sign of Life’ Yet, NASA Says

A Mysterious Rock in an Ancient Martian Riverbed NASA’s Perseverance rover, which landed in Jezero Crater in 2021, has been on the hunt for signs of past life. In an ancient river channel called Neretva Vallis – once a conduit for water into Jezero’s lake – the rover spotted something unusual last year washingtonpost.com theguardian.com. A flat, fine-grained mudstone rock caught scientists’ attention because its surface was dotted with multicolored spots and tiny nodules. The science team nicknamed the rock “Cheyava Falls,” after a waterfall in the Grand Canyon, due to its shape. They playfully described the larger blotches as “leopard spots” and the tiny dark bumps as
10 September 2025
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