Well, moments ago, NASA introduced its 2025 astronaut class. 10 candidates selected from a group of more than 8,000 applicants. Now, they will undergo nearly two years of training before they're sent off on missions to Mars as well as the moon.NBC News correspondent Marissa Para joins me with more. Marissa, this is so exciting. I mean, tell us about who these newly minted astronauts are.>> Well, I can tell you more than half of them are women, Morgan. Um but these are extremely qualified candidates obviousl ...