Astrophysics research explores early planet formation and first black holes

New astrophysical research suggests that planet formation may have occurred much earlier in the universe's history than previously estimated. Modeling indicates that planetesimals, the precursors to terrestrial planets, could form around low-mass stars within the debris of Population III pair-instability supernovae. These explosions, occurring roughly 100 million years after the Big Bang, enriched local gas with heavy elements, potentially creating protoplanetary disks with significant water content.

Complementary research highlights the potential for next-generation gravitational wave detectors to study the era of Population III stars. While current observatories like LIGO, Virgo, and KAGRA are limited to observing events within the last 8 billion years, upcoming projects such as the US-based Cosmic Explorer and the Einstein Telescope in Sardinia aim to detect gravitational waves from the earliest black holes. These instruments could provide critical data on the massive stars that formed from pristine hydrogen and helium shortly after the Big Bang.