Astronomers are a step closer to cracking one of the secrets of dark energy—the mysterious force believed to be causing the universe's accelerated expansion.

Dark matter is an elusive type of matter that does not emit, reflect or absorb light, yet is estimated to account for most of ...

For years, scientists thought they understand what happens when stars explode. New earliest-ever mages of supernova events ...

"Precision in these measurements is critical, as even subtle discrepancies could signal deviations from the model — ...