Keith Cowing

[ESA] Join the Science Definition Team (SDT) to help define the Exploration Science Payload for a proposed future Mars lander: MEDaL-1.

Astrobiology, exoplanet, Leave a comment

NASA's Science Mission Directorate (SMD), Astrobiology Program, is pleased to extend the deadline for the Announcement for Partnership Proposals (AFPP): Astrobiology Science Conference (NNH26ZDA009L) on the NASA Solicitation and Proposal Integrated Review and Evaluation System (NSPIRES).

[astro-ph.EP] The characterization of terrestrial exoplanets and the conditions that lead to divergent climate outcomes is a primary goal of exoplanetary science.

[astro-ph.GA] Over the past two decades, internet-enabled citizen science research (CSR) has contributed to significant discoveries while involving millions of people in the research process.

The Uranian moons Ariel, Umbriel, Titania, and Oberon are enriched in CO

Volatile outgassing from planetary interiors controls the composition of rocky exoplanets' secondary atmospheres. However, observations indicate that disequilibrium processes, such as photochemistry and vertical transport, can strongly alter the chemical structure of Hot Jupiters.

Atmospheric compositions of giant exoplanets can retain information about their formation environments, as volatile species condense at different temperatures in protoplanetary discs.

[astro-ph.EP] All exoplanetary systems are expected to host exozodiacal dust, or exozodi, originating from planetesimals. For many stars, exozodi will likely be the largest source of astrophysical noise in direct observations of terrestrial exoplanets.

The earliest rocky planet atmospheres are shaped by competition between initial volatile inventories and atmospheric escape. On young magma ocean planets, outgassing competes with atmospheric escape, controlling volatile retention and atmospheric evolution.