Scientists loaded three missions worth nearly $1.6 billion on a SpaceX Falcon 9 rocket for launch Wednesday, toward an orbit nearly a million miles from Earth, to measure the supersonic stream of ...

In a remarkable cosmic event observed on November 2, 2025, scientists had the rare opportunity to witness a dead star annihilating a planet in real time. This observation builds upon previous ...

For over two centuries, we have watched the red giant R Leonis dim and brighten with regularity, but this 'heartbeat' is ...