As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a ...

A dedicated scan for signs of radio-transmitting technology in interstellar comet 3I/ATLAS has come back with absolute ...

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

Whether Artemis ultimately fulfills its promise of sustained lunar exploration, or is reshaped by politics, budgets and ...