Astrobiology21- Page

Have you ever imagined what Antarctica looks like beneath its thick blanket of ice? Hidden below are rugged mountains, valleys, hills and plains. Some peaks, like the towering Transantarctic Mountains,

Photo courtesy of Andrew Wozniak, University of Delaware; HOV Alvin Team; Funder: NSF. © Woods Hole Oceanographic Institution Scientists diving in the human-occupied vehicle Alvin recently witnessed a rare but

Planet-planet Binary – Grok via Astrobiology.com Significant numbers of free-floating planetary-mass objects have been discovered in nearby star-forming regions by the James Webb Space Telescope, including a substantial number (42)

Giant impacts are highly complex events with different processes dominating the dynamics of different regions of the colliding bodies. Illustrative time snapshots from an example SPH giant impact simulation with

Figure showing the contribution of different gases to the best-fit spectrum obtained from the free chemistry retrieval binned down to R∼200, for STIS+WFC3+NIRCam observations. — astro-ph.EP HD 209458 b is

Simulated behaviour of L 98-59 b calculated with a semi-analytic toy model for its thermal evolution. Temperature is plotted over time for different initial temperatures 𝑇0 (line style) and tidal

Example of a bipolar outflow in IRAS 15557-5215 region. The top panels show the moment-0 map (left) and moment-1 map (right) of HC3N line. The outflow axis is represented by

Ganymede and Callisto As Seen By Voyager — NASA Analysis of Callisto’s moments of inertia, derived from Galileo’s gravity data, suggests that its structure is not fully differentiated. This possibly

MRS continuum-subtracted spectra of C2H2 (magenta), HCN (green), H2O (blue), and CO2 (brown) emission lines between 13.6-15.3 µm from JDISCS sources with sub-mm dust sizes r > 63 au. ALMA

Biosignatures & Paleobiology Status Report astro-ph.EP May 13, 2025 Schematic diagram of the analytical model (Eq. (11)) we use to understand the effect of cloud height and particle size on