Nepal, April 7 -- Little-known lunar craters, a solar eclipse and meteor strikes: the Artemis II astronauts wrapped their lunar flyby and began their journey back to Earth late Monday, bringing with them rich celestial observations scientists hope will open doors.

Their eyes glued to the spacecraft windows for nearly seven hours, the team of four who spent their day breaking records and making history were treated to a view of the Moon unlike any other.

"Humans probably have not evolved to see what we're seeing," said Victor Glover. "It is truly hard to describe. It is amazing."

The crew reported in vivid detail features of the lunar surface and later witnessed a solar eclipse, when the Moon passed in front of the Sun.

They also desc...