A recent incident involving a Chinese spacecraft and a Starlink satellite highlights growing concerns over the safety of Earth’s crowded orbit. The close encounter occurred when one of the satellites ...

A fleet of NASA missions has likely uncovered a collision between two ultradense stars in a tiny galaxy buried in a huge stream of gas. Astronomers have never seen this type of explosive event in an ...

Astronomers have witnessed evidence of an extremely violent collision between planets, and it resembles the event in Earth's history that created the moon.

The formation of Mercury remains an unsolved mystery. The planet closest to the Sun has a disproportionately large metallic core – accounting for about 70% of its mass – and a relatively small rocky ...

WASHINGTON (Reuters) -Hundreds of U.S. companies on Tuesday urged Congress to back off a plan to kill a small federal office tasked with managing satellite traffic in space, a badly needed civilian ...