In the vast, dark expanse of the universe, there lies a mystery about the first stars—massive, luminous celestial bodies that ...

Astronomers have been trying to detect atmospheres on planets orbiting TRAPPIST-1, but bursts of radiation from the star make ...

Scientists are peering into the universe's mysterious Cosmic Dawn using the faint whispers of hydrogen radio waves emitted over 13 billion years ago. These signals, particularly the elusive ...

A faint radio signal beamed over the eons by hydrogen atoms in the early universe that contains important information about ...

As mysterious as the Big Bang that gave birth to the Universe is the brief but tumultuous period that immediately followed it ...

Astronomers are puzzled by a strong burst of radio waves traced back to a NASA satellite that had been inactive since the ...

While investigating a mysterious radiation signal unlike any seen before, astronomers may have uncovered a rare pair of binary supermassive black holes with a truly monstrous appetite. When you ...

The latest solar flare follows an M-class one, the second-highest on the scale, that occurred days earlier on June 15. It ...

Supermassive black holes — cosmic titans with masses of 100,000 to billions of times the mass of the sun — are among the ...

Sunspot region 4114 has unleashed its most powerful solar flare yet — an X1.9 class that erupted late June 19, triggering shortwave radio blackouts across the Pacific Ocean, including parts of Hawaii.

Strange signals defy physics models, potentially hinting at unknown particles or phenomena beyond the Standard Model.