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Top astrobiology.com News

Interstellar Comet 3I/Atlas Enters Inner Solar System
Science · United States

Interstellar Comet 3I/Atlas Enters Inner Solar System

43% Center coverage: 160 sources
Global observatories are intensively studying its emerging coma in preparation for its nearest solar approach on Oct. 30.See the Story
The ‘Great Dying’ Wiped Out 90% of Life, Then Came 5 Million Years of Lethal Heat. New Fossils Explain Why
Science · United States

The ‘Great Dying’ Wiped Out 90% of Life, Then Came 5 Million Years of Lethal Heat. New Fossils Explain Why

85% Center coverage: 13 sources
Around 252 million years ago, life on Earth suffered its most catastrophic blow to date: a mass extinction event known as the “Great Dying” that wiped out around 90% of life. See the Story
Was Mars doomed to be a desert? Study proposes new explanation
Science

Was Mars doomed to be a desert? Study proposes new explanation

83% Center coverage: 6 sources
One of the great unsolved problems in modern planetary science is written on the surface of Mars. Mars has canyons that were carved by rivers, so it was once warm enough for liquid water. How—and why—did it become a barren desert today?See the Story

Hydrothermal Systems May Have Supplied Essential Phosphorus for Early Life

100% Center coverage: 1 sources
Understanding where and in what quantities essential elements for life have existed on Earth's surface helps explain the origin and evolution of life. Phosphorus is one such element, forming the backbone of DNA, RNA, and cellular membranes.See the Story

New Horizons Images Enable First Test of Interstellar Navigation

Coverage: 2 sources
By looking at the shifting of stars in photos from the New Horizons probe, astronomers have calculated its position in the galaxy – a technique that could be useful for interstellar missionsNASA · United StatesSee the Story

Probing The Variations Of Interstellar Dust Abundance And Properties Within And Between Galaxies With HWO UV Spectroscopy In The Local Volume - Astrobiology

The cycle of metals between the gas and the dust phases in the neutral interstellar medium (ISM) is an integral part of the baryon cycle in galaxies. The resulting variations in the abundance and properties of interstellar dust have important implications for how accurately we can trace the chemical enrichment of the universe over cosmic […] The post Probing The Variations Of Interstellar Dust Abundance And Properties Within And Between Galaxies…Read Article

Dynamical Origin Of Theia, The Last Giant Impactor On Earth - Astrobiology

Cosmochemical studies have proposed that Earth accreted roughly 5-10% of its mass from carbonaceous (CC) material, with a large fraction delivered late via its final impactor, Theia (the Moon-forming impactor). ‘ Here, we evaluate this idea using dynamical simulations of terrestrial planet formation, starting from a standard setup with a population of planetary embryos and […] The post Dynamical Origin Of Theia, The Last Giant Impactor On Earth …Read Article

How can astronomers tell what the weather’s like on exoplanets?

100% Center coverage: 1 sources
We’ve all looked at the weather forecast only to be disappointed that the promise of a beach-worthy Saturday has been spoiled by a thunderstorm – especially if, like me, you live in Melbourne. No disrespect to meteorologists, the weather on Earth is a fickle beast. But telescopes have gotten so good now that astronomers can tell what the weather is like on planets hundreds of light-years away. Earlier this month, astronomers reported in a Nature…Space · MelbourneSee the Story

Testing Origin-of-Life Theories with the Habitable Worlds Observatory (HWO) - Astrobiology

The Habitable Worlds Observatory (HWO) aims to telescopically constrain the frequency and abundance of biospheres in the solar neighborhood. Origin-of-life theories vary in their predictions for the environmental requirements and the expected frequency of abiogenesis, meaning that constraints on the frequency and distribution of life on exoplanets from HWO can in principle directly test theories […] The post Testing Origin-of-Life Theories with …Read Article

Studying Protoplanets and Protoplanetary Disks with the Habitable Worlds Observatory - Astrobiology

Since the discovery of the first exoplanet orbiting a Sun-like star, the confirmation of nearly 6000 exoplanets to date – and their diversity – has revolutionized our knowledge of planetary systems in the past three decades. Nevertheless, the majority of these planets are around mature stars (≳1 Gyr), where the planet birth environments have already […] The post Studying Protoplanets and Protoplanetary Disks with the Habitable Worlds Observatory…Read Article

Adapting to UV: Integrative Genomic and Structural Analysis in Bacteria from Chilean Extreme Environments - Astrobiology

Extremophilic bacteria from extreme environments, such as the Atacama Desert, Salar de Huasco, and Antarctica, exhibit adaptations to intense UV radiation. In this study, we investigated the genomic and structural mechanisms underlying UV resistance in three bacterial isolates identified as Bacillus velezensis PQ169, Pseudoalteromonas sp. AMH3-8, and Rugamonas violacea T1-13. Through integrative genomic analyses, we […] The post Adapting to UV: …Chile · ChileRead Article

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