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 ...

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 ...

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

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

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

signal, taken several years after the ... The cloud could have emitted a laser-like beam of radiation in a phenomenon called a maser. This proposed series of events is “a very rare kind of ...

Scientists uncover surprising immune response that helps tumors grow, revealing new strategies to improve treatment ...

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.