NASA says it is delaying its mission to send four astronauts on a journey around the moon after troubleshooting a liquid hydrogen leak during a critical test of the Artemis II rocket. This comes as a ...

Over 70 years of spaceflight, nearly 10,000 intact satellites and rocket bodies have plunged back to Earth, yet their final moments remain poorly understood.

In April 1961, Yuri Gagarin became the first human in space, but the most dangerous part came during reentry, when a fuel leak and a delayed separation sent Vostok 1 into a violent spin. Years later, ...

Picture a spacecraft returning to Earth after a long journey. The vehicle slams into the planet's atmosphere at roughly ...