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Top astrobiology.com News

Scientists Say They Have Identified Earth’s Oldest Rocks. It Could Reveal an Unknown Chapter in Our Planet’s History
Research · Quebec

Scientists Say They Have Identified Earth’s Oldest Rocks. It Could Reveal an Unknown Chapter in Our Planet’s History

70% Center coverage: 20 sources
By Katie Hunt, CNN (CNN) — A rocky outcrop in a remote corner of northern Quebec appears serene in its eerie isolation on the eastern shore of Canada’s Hudson Bay. But over the past two decades, this exposed remnant of ancient ocean floor, known as the Nuvvuagittuq Greenstone Belt, has been a heated scientific battlegroundSee 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
New Horizons Images Enable First Test of Interstellar Navigation
NASA · United States

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 missionsSee the Story

A new alloy is enabling ultra-stable structures needed for exoplanet discovery

100% Center coverage: 2 sources
A unique new material that shrinks when it is heated and expands when it is cooled could help enable the ultra-stable space telescopes that future NASA missions require to search for habitable worlds.NASASee the Story

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

An Unexpected Mineral Discovered In A Grain Of Asteroid Ryugu - Astrobiology

The pristine samples from asteroid Ryugu returned by the Hayabusa2 mission on December 6, 2020, have been vital to improving our understanding of primitive asteroids and the formation of the Solar System. The C-type asteroid Ryugu is composed of rocks similar to meteorites called CI chondrites, which contain relatively high amounts of carbon, and have […] The post An Unexpected Mineral Discovered In A Grain Of Asteroid Ryugu appeared first on As…Japan · JapanRead Article

Extreme Forward Scattering Observed in Disk-Averaged Near-Infrared Phase Curves of Titan - Astrobiology

Titan, with its thick and hazy atmosphere, is a key world in our solar system for understanding light scattering processes. NASA’s Cassini mission monitored Titan between 2004 and 2017, where the derived dataset includes a large number of whole disk observations. Once spatially integrated, these whole disk observations reveal Titan’s phase-dependent brightness which can serve […] The post Extreme Forward Scattering Observed in Disk-Averaged Near…Read Article

CO2 Infrared Spectra On Silicate Dust Grain Analogs: Implications For JWST Observations - Astrobiology

Carbon dioxide is one of the three most abundant species within the ice mantles around dust grains inside molecular clouds. Since a substantial amount of interstellar grains is made of siliceous materials, we have studied the infrared profile of CO2 deposited on top of a bare and ice-coated amorphous silicate (MgFeSiO4) film using reflection absorption […] The post CO2 Infrared Spectra On Silicate Dust Grain Analogs: Implications For JWST Observ…SpeciesRead Article

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