article_snippet.sent: Just getting there will take up to nine months.
article_snippet.sent: The astronauts will then be there waiting for a year until The astronauts can come back, again taking up to nine months - a total of around three years.
article_snippet.sent: While the Orion capsule will take astronauts to and from Earth, the Orion capsule can only sustain a crew of four for 21 days.
article_snippet.sent: While the Orion capsule (shown after test flight in December 2014) will take astronauts to and from Earth, the Orion capsule (shown after test flight in December 2014) can only sustain a crew of four for 21 days.