In the same way that Artemis II serves as the first crewed flight to test technology for future missions to the moon and Mars, Apollo 8, which launched on Dec. 21, 1968, also served as a lunar landing preparation mission, preceding Apollo 11's July 1969 lunar landing.

The "very eerie" parallel was drawn between the NASA missions as tensions escalate between President Donald Trump and Iran.

Monday, April 6, was Flight Day 6 for the Artemis 2 mission. In many ways it was the mission's climax, containing the lunar flyby, the closest approach to the Moon, and the literal turning point as the crew is now headed back to Earth.

NASA's Artemis 2 mission will send astronauts around the moon, paving the way for future lunar landings. See how it compares to Apollo 8.

Artemis II's crew sent a heartfelt Easter message to the world as they approached the moon Sunday -- a remarkable echo of a Christmas address given by the mission's closest cousin in space history, Apollo 8.

The newest Artemis II photos from their historic moon mission have scientists at Chicago's Adler Planetarium over the moon.

More breathtaking images released over the weekend from NASA's Artemis II mission show both the moon and Earth in all its cosmic glory. Take a look.