Astrophysics

A new study proposes that hypothetical dark stars, powered by dark matter, could account for three surprising observations from the James Webb Space Telescope in the early universe. These include ultra-bright blue monster galaxies, overmassive black holes, and mysterious little red dots. Researchers suggest these exotic stars formed quickly after the Big Bang and seeded supermassive black holes.

28. tammikuuta 2026 Raportoinut AI

For the first time, scientists have detected radio waves from a Type Ibn supernova, revealing the final years of a massive star's life. The signals show the star shed significant material just before exploding, likely due to a companion star. This discovery offers a new method to study stellar deaths using radio telescopes.

Astronomers have identified the Champagne Cluster, a merging of two galaxy clusters discovered on New Year's Eve 2020. The system's bubbly appearance and superheated gas earned it its festive nickname. This rare event provides insights into dark matter behavior during cosmic collisions.

31. joulukuuta 2025 Raportoinut AI

Researchers from the University of Texas at Austin have identified 16 large drainage basins on ancient Mars, highlighting prime locations for evidence of past life. These basins, covering just 5% of the planet's ancient terrain, accounted for 42% of river erosion. The findings suggest these areas offered the most promising conditions for habitability when liquid water flowed.