An expanding universe complicates this picture just a little bit, because the universe absolutely refuses to be ...

But new studies suggest that one of his most famous ideas, the cosmological constant, may not be fixed after all. If true, it could mean the universe is destined to collapse rather than expand forever ...

Astronomers have called into question the identity of the most distant star in the universe ever detected, Earendel, first spotted by NASA's Hubble Space Telescope in 2022. New research using the ...

An artistic illustration of the mechanism proposed by Professor Stefano Profumo where quantum effects near the rapidly expanding cosmic horizon after the Big Bang gravitationally generate dark matter ...