short-lived radionuclides Archives

Schematic picture of the system assumed in this study. (a) A supernova explosion occurs at a distance 𝑑 from the protosolar disk, and (b) the expanding supernova shockwave contacts the protosolar disk. At this time, a huge number of accelerated particles are trapped in the shockwave region. With the contact, (c-1) SLRs synthesized inside the supernova are directly injected into the disk, and (c-2) particles trapped inside the shockwave irradiate the disk, causing nucleosynthesis within the disk. -- astro-ph.EP

Astrochemistry, Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Meteorites & Asteroids, Status Report

Cosmic-Ray Bath in a Past Supernova Gives Birth to Earth-Like Planets

by Keith CowingDecember 15, 2025December 15, 2025

A key question in astronomy is how ubiquitous Earth-like rocky planets are. The formation of terrestrial planets in our solar system was strongly influenced by the radioactive decay heat of […]

short-lived radionuclides

Cosmic-Ray Bath in a Past Supernova Gives Birth to Earth-Like Planets

Potential Survivable Niches For Microbial Life On The Lunar South Pole

JWST Telemetry Combined With Active Coronagraphy: Raw Contrast Predictions For Exoplanet Imaging With The Habitable Worlds Observatory

Antarctica Is Home To Microbes Found Nowhere Else On Earth

Study: Peptides Can Form Well-defined Structures In Harsh, Venus-like Conditions

Modeling Carbon-Based Planets with MAGRATHEA