NASA's Mars 2020 rover tests descent-stage separation

In this picture from Sept. 28, 2019, engineers and technicians working on the assembly and testing of the Mars 2020 spacecraft look on as a crane lifts the rocket-powered descent stage away from the rover. They've just completed ...

Museum of the Bible quietly replaces questioned artifact

The Museum of the Bible in Washington quietly replaced an artifact purported to be one of a handful of miniature Bibles that a NASA astronaut carried to the moon in 1971 after an expert questioned its authenticity.

Divers fight Senegal's plastic tide

When the sight of plastic bags, bottles and other debris littering the seabed becomes too much, there's just one thing to do: don your diving suit, strap on an air tank and fish out the stuff yourself.