HOUSTON, April 4 -- As Artemis 2 astronauts forged ahead Friday on their lunar mission, Nasa released initial images taken from inside the Orion spacecraft, including a full portrait of Earth featuring its deep blue oceans and billowing clouds.

After a flurry of high-stakes activity including a dramatic blast-off and an engine firing that catapulted them on their historic trajectory to circle the Moon, the four astronauts aboard were able to catch their breath, even as they continued to perform a variety of equipment checks and tests.

"There has been a tremendous amount of disbelief for me, it's just so extraordinary," said Canadian Jeremy Hansen during a Q&A session with press late Thursday.

"I really like it up here," said Hansen, on...