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University of New Mexico Scientists help Uncover 4.1 billion-year-old Martian Meteorite Revealing Clues to Planet’s Ancient Past
[UNM]. Scientists at the University of New Mexico have played a key role in identifying a rare, 4.1-billion-year-old Martian meteorite that provides new evidence that the Red Planet may have once had a wetter, Earth-like environment. The discovery, titled “A Martian meteorite that formed ≳4.1 billion years ago samples Mars’ early crust and mantle” and…
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Detection Of HNCOH+ In The Interstellar Medium
[astro-ph.GA] Only five out of the ∼350 molecules detected in the interstellar medium (ISM) carry…
Advancing Methane Detection Technology For Future Mars Missions
[Canadian Space Agency]. The presence of methane on Mars could provide important clues about the…
Comets Probably Didn’t Seed Life On Earth After All, New Study Suggests
[University of Cambridge]. Comets didn’t seed life on Earth after all, a new study suggests,…
Earth As A Potential Source Of Llife For Europa’s Subsurface Ocean
The paper discusses the possibility of dust particles containing living bacteria ejected from Earth reaching Europa and landing on its surface. It is shown that, taking certain factors into account, over a period of 30 − 80 Myr (the estimated age of Europa’s ocean), Jupiter’s moon would have been impacted…
Keep readingDust To Dust: Prospects For Passive Technosignatures As Relics Of ETI
Technological societies are separated in time, not just space — that is the lesson of the Drake equation. Might the best way to seek them be to find technosignatures that persist long after their creators? I present work I and my collaborators have done on the idea of passive technosignatures,…
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Habitable Zones
Astronomy & Telescopes
Atmospheres, Climate, Weather
![Astrobiologist Dale Andersen’s Antarctic Field Report: 29 October 2026: Preparing For The Overland Traverse To Lake Untersee [UPDATE]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/29-October-2026b-copy.jpeg?fit=1200%2C582&ssl=1)
Astrobiologist Dale Andersen’s Antarctic Field Report: 29 October 2026: Preparing For The Overland Traverse To Lake Untersee [UPDATE]
Update: note from Dale at 6:00 pm EDT / 22:00 UTC: “It has been pretty breezy all day with blowing snow. Nevertheless it’s been a productive day, as we continue to inventory and organize gear inside our new hut here at the airbase.” Keith’s earlier note: Dale Andersen and his team continue to dig out…
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Astrobiologist Dale Andersen’s Antarctic Field Report: 28 October 2026: Shoveling Snow In Antarctica
[Dale Andersen] : Hi Keith, A quick note while the base WiFi is up and running. We spent the last two days digging out the…
Astrobiologist Dale Andersen’s Antarctic Field Report: 26 October 2026: Flying South
Keith’s note: This report may be updated over the course of the day. Dale’s departure from Cape Town was scheduled for 10:00 am Local time…
Astrobiologist Dale Andersen’s Antarctic Field Report: 25 October 2026: Hurry Up And Wait
Dale Andersen: “Hurry up and wait.” Anyone who works in the polar regions knows the phrase, and knows the experience: storms, blowing snow, and low…
Imaging & Spectroscopy
The Impact Of The Sulfur Allotropes And Sulfur Hydrides On The Venus Cloud Chemistry
[astro-ph.EP] Venus is home to vivid sulfur chemistry, with SO2 as the major sulfur gas species and a global cloud layer between 47 and~70 km…
Webb Space Telescope Used To Compare Interstellar Comet 3I/ATLAS With Icy Bodies In Our Solar System
[SwRI] A Southwest Research Institute-led study used NASA’s James Webb Space Telescope to examine ice grains streaming from interstellar comet 3I/ATLAS, just the third object…
Mesoscale Modelling Of Titan’s Shangri-La region: The Impact Of Surface Properties On Winds
[astro-ph.EP] The knowledge of Titan’s near-surface atmosphere is sparse. The Huygens descent probe measured winds, and the multiple dune field observations and possible dust storms…
Biosignatures & Paleobiology
Estimates For The Prebiotic Reaction Volume Necessary For The Origin Of Life
[Life] The prebiotic chemistry necessary for the development of life requires a low-probability combination of steps to reach the complexity of a living cell. An…
How Strong Is the Case For The RNA World?
[Life] The RNA World theory was proposed as a way to explain the origin of the DNA-RNA-Protein relationship found all current cells. It has been…
Perseverance Rover Offers Clues to Protect Crews From Mars Dust
[NASA]. By studying tiny particles clinging to spacesuit samples aboard the rover, scientists could help develop better ways to reduce astronauts’ exposure to dust on…