Cosmic-Ray Bath in a Past Supernova Gives Birth to Earth-Like Planets
arXiv:2512.09660 · doi:10.1126/sciadv.adx7892
Abstract
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 (SLRs), particularly Al, likely delivered from nearby supernovae. However, current models struggle to reproduce the abundance of SLRs inferred from meteorite analysis without destroying the protosolar disk. We propose the `immersion' mechanism, where cosmic-ray nucleosynthesis in a supernova shockwave reproduces estimated SLR abundances at a supernova distance (1 pc), preserving the disk. We estimate that solar-mass stars in star clusters typically experience at least one such supernova within 1 pc, supporting the feasibility of this scenario. This suggests solar-system-like SLR abundances and terrestrial planet formation are more common than previously thought.
23 pages, 5 figures, 1 table, and Supplementary Materials. Author accepted manuscript of an article published in Science Advances
References in corpus (19)
- Observational constraints on the progenitors of core-collapse supernovae : the case for missing high mass stars
- Short-lived Nuclei in the Early Solar System: Possible AGB Sources
- Bifurcation of planetary building blocks during Solar System formation
- A water budget dichotomy of rocky protoplanets from Al-heating
- Interaction of Supernova Ejecta with Nearby Protoplanetary Disks
- Inheritance of solar short- and long-lived radionuclides from molecular clouds and the unexceptional nature of the solar system
- Simultaneous Triggered Collapse of the Presolar Dense Cloud Core and Injection of Short-Lived Radioisotopes by a Supernova Shock Wave
- Evidence for past interaction with an asymmetric circumstellar shell in the young SNR Cassiopeia A
- Accretion of the earliest inner solar system planetesimals beyond the water-snowline
- Shock evolution in non-radiative supernova remnants
- SIRIUS Project. III. Star-by-star simulations of star cluster formation using a direct N-body integrator with stellar feedback
- A Solar System formation analogue in the Ophiuchus star-forming complex
- On beryllium-10 production in gaseous protoplanetary disks and implications on the astrophysical setting of refractory inclusions
- On the Number of Stars in the Sun's Birth Cluster
- Aluminum-26 Enrichment in the Surface of Protostellar Disks Due to Protostellar Cosmic Rays
- Insights on the Sun birth environment in the context of star-cluster formation in hub-filament systems
- Observational constraints on the likelihood of Al in planet-forming environments
- Assessment of Cr isotopic heterogeneities of volatile-rich asteroids based on multiple planet formation models
- Self-consistent Conditions for Al Injection into Protosolar Disk from a Nearby Supernova