Ocean Exploration Trust / NOAA
Princeton Plasma Physics Laboratory
NASA has successfully returned a 250-gram sample of dirt from a near-Earth asteroid called Bennu. Scientists around the world will study the rock particles to see if they contain clues to the origins of life on our planet.
Enrique Marcarian/Reuters
United Launch Alliance via NASA
Historical / Contributor / Getty Images
The Republic, azcentral.com
Auscape/Getty Images
Walt Harden / 500px/Getty Images and Gregory Sweeney/Getty Images
Education Images/Universal Images Group/Getty Images