Biosignatures & Paleobiology Status Report eartharxiv.org November 12, 2025 Life processes and requirements resulting in the production of specific molecular structures that, if preserved, can function as biosignatures. B) OM
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A)–(D). Spectrally integrated flux maps for HCN, CO, CH3OH, and CS in K2. Contour intervals in each map are given in multiples of the rms noise. The rms noise (σ,
A trick of the light will cause a vast letter “X” and “V” to appear on the lunar surface tonight, mere hours before the moon hits its first quarter phase,
This shimmering view of interstellar gas and dust was captured by the European Space Agency’s Euclid space telescope. The nebula is part of a so-called dark cloud, named LDN 1641.
As someone who hunts deals for a living, I think you should seriously consider 77% off and three free months of NordVPN if you’re planning on any travel, for the
As a new year begins, let’s take a look at what’s ahead for the European Space Agency in 2026. From Earth to the farthest reaches of the Solar System, 2026
Researcher Issaku Kohl recorded this image at a historic mining district in Spain, which scientists now an analog for the surface of Mars. It shows the mixing zone on the
Base Camp at Lake Untersee, Antarctica January 2026 – Dale T. Andersen. (Larger image) Keith: We just completed the camp last night, and today a storm will move in with
It’s time to get tactical, as we’re taking a look at the more bombastic side of sci-fi this time with our rundown of the ten best sci-fi action movies of
Venus just lost its last active spacecraft, but more might be coming in a few years. The Japanese Aerospace Exploration Agency’s Akatsuki mission orbiting Venus was declared dead last week
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