Spending an extended period of time up in space isn't good for you, which means that returning astronauts typically have a unique set of difficulties to overcome after returning to Earth.

The rocket also disrupted air traffic in Florida as flights into Miami, Fort Lauderdale, Palm Beach, and Orlando airports were shut down due to “falling space debris.” “Anyone know what this is? I ...

"We're seeing that the shoreline of this body of water evolved over time," Cardenas said. "We tend to think about Mars as just a static snapshot of a planet, but it was evolving. Rivers were ...