Astrochemistry

Planets Form In Organic Soups With Different Ingredients

Planets Form In Organic Soups With Different Ingredients

Astronomers have mapped out the chemicals inside of planetary nurseries in extraordinary detail.

Proxima Centauri b

Exosphere Modeling of Proxima b: A Case Study of Photochemical Escape with a Venus-like Atmosphere

Exosphere Modeling of Proxima b: A Case Study of Photochemical Escape with a Venus-like Atmosphere

Exoplanets orbiting M-dwarfs within habitable zones are exposed to stellar environments more extreme than that terrestrial planets experience in our Solar System, which can significantly impact the atmospheres of the exoplanets and affect their habitability and sustainability.

Astrochemistry

Molecules With ALMA At Planet-forming Scales (MAPS) VI: Distribution of the small organics HCN, C2H, and H2CO

Molecules With ALMA At Planet-forming Scales (MAPS) VI: Distribution of the small organics HCN, C2H, and H2CO

Small organic molecules, such as C2H, HCN, and H2CO, are tracers of the C, N, and O budget in protoplanetary disks.

SETI

Intermittent Signals And Planetary Days In SETI

Intermittent Signals And Planetary Days In SETI

Interstellar signals might be intermittent for many reasons, such as targeted sequential transmissions, or isotropic broadcasts that are not on continuously, or many other reasons.

Extrasolar Planets

Modons On Tidally Synchronised Extrasolar Planets

Modons On Tidally Synchronised Extrasolar Planets

We investigate modons on tidally synchronised extrasolar planets. Modons are highly dynamic, coherent flow structures composed of a pair of storms with opposite signs of vorticity.

Astrochemistry

Molecules with ALMA at Planet-forming Scales (MAPS). IX. Distribution and Properties of the Large Organic Molecules HC3N, CH3CN, and c-C3H2

Molecules with ALMA at Planet-forming Scales (MAPS). IX. Distribution and Properties of the Large Organic Molecules HC3N, CH3CN, and c-C3H2

The precursors to larger, biologically-relevant molecules are detected throughout interstellar space, but determining the presence and properties of these molecules during planet formation requires observations of protoplanetary disks at high angular resolution and sensitivity

Space Life Science

NASA Selects 10 Space Biology Research Projects That Will Enable Organisms To Thrive In Deep Space

NASA Selects 10 Space Biology Research Projects That Will Enable Organisms To Thrive In Deep Space

NASA announces the award of 10 grants or cooperative agreements for exciting new Space Biology research that will advance NASA's understanding of how living systems respond, acclimate, and adapt to the space environment in support of human space exploration.

Fossils

500-million-year-old Fossil Represents Rare Discovery Of Ancient Animal In North America

500-million-year-old Fossil Represents Rare Discovery Of Ancient Animal In North America

Many scientists consider the "Cambrian explosion" -- which occurred about 530-540 million years ago -- as the first major appearance of many of the world's animal groups in the fossil record.

Missions, Hardware, Software, & Sensors

Universal Life Detection: Astrobiology And Assembly Theory (with video)

Universal Life Detection: Astrobiology And Assembly Theory (with video)

Researchers supported in part by the NASA Astrobiology Program have experimentally tested a method that could aid in the search for life... including life as we don't know it.

Habitable Zones & Global Climate

The Young Sun's XUV-activity As A Constraint For Lower CO2-limits In The Earth's Archean Atmosphere

The Young Sun's XUV-activity As A Constraint For Lower CO2-limits In The Earth's Archean Atmosphere

Despite their importance for determining the evolution of the Earth's atmosphere and surface conditions, the evolutionary histories of the Earth's atmospheric CO2 abundance during the Archean eon and the Sun's activity are poorly constrained.

Extrasolar Planets

Postulating Exoplanetary Habitability via a Novel Anomaly Detection Method

Postulating Exoplanetary Habitability via a Novel Anomaly Detection Method

A profound shift in the study of cosmology came with the discovery of thousands of exoplanets and the possibility of the existence of billions of them in our Galaxy. The biggest goal in these searches is whether there are other life-harbouring planets.

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