Lesson focuses on the Plants in Space experiment which studied how plant roots developed in a weightless environment. Students will conduct three scientific investigations to learn how light, gravity and microgravity affect the growth of...

Seven Earth-sized planets have been observed by NASA's Spitzer Space Telescope around a tiny, nearby, ultra-cool dwarf star called TRAPPIST-1. Three of these planets are firmly in the habitable zone. In this video, NASA Scientists...