Artemis II is now just hours away from liftoff, and for the first time in more than half a century, humans are preparing to leave Earth orbit and head toward the Moon again. The mission is scheduled for 6:24 p.

NASA’s Psyche spacecraft successfully completed a flyby of the Red Planet on May 15, coming within 2,864 miles (4,609 kilometers) of the Martian surface. The spacecraft used Mars for a gravity assist to boost its speed and adjust its orbital plane without sparing any onboard propellant before heading directly toward the asteroid,