Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...

SETI's 1977 "Wow!" signal from deep space was even stronger than originally thought, but its source remains a complete mystery.

Astronomers have discovered that the Seven Sisters of the Pleiades star cluster have more stellar siblings than we thought — a lot more. Using NASA's exoplanet hunting spacecraft TESS (Transiting ...

June 22 marks the 350th anniversary of the Royal Observatory Greenwich, the home of the historic Prime Meridian that is considered by many to be the birthplace of modern astronomy. To celebrate, we're ...