As the United States approaches the 250th anniversary of its independence, NASA said the Artemis II mission has carried a collection of historic mementos. Among them was a flag originally designated

NASA said Friday it’s revamping its Artemis moon exploration program to make it more like the fast-paced Apollo program half a century ago, adding an extra practice flight before attempting a high-risk lunar landing with a crew in two years. The overhaul ...

What began as a mission to land on the moon became history’s most harrowing space rescue after a technical failure forced the crew of Apollo 13 into a 200,000-mile race for survival.

The Apollo era remains one of the most remarkable achievements in the history of space exploration. Launched during the height of the Cold War, the program was driven by the United States’ ambition to outpace the Soviet Union after the launch of Sputnik 1.