NASA astronaut Don Pettit celebrates his 70th birthday with a spectacular return from the International Space Station after 220 days in orbit.

A newly discovered comet, called C/2025 F2 (SWAN), may have disintegrated. But the remnants are still visible.

The ultimate purpose of PUNCH is to use its four instruments — three wide-field imagers (WFI) and a near-field imager (NFI) — ...