article_snippet.sent: The panel said such a plan would use an Orion spacecraft to move crewmembers from Earth into orbit and back down. '
article_snippet.sent: an orbital mission was identified as the crucial first step of a detailed plan, comparing an orbital mission to NASA's Apollo 8 mission, which took astronauts into orbit around the moon before humans landed on the satellite's surface.
article_snippet.sent: The panel said a detailed plan would use an Orion spacecraft to move crewmembers from Earth into orbit and back down. '