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Keegan Barber/NASA via Getty Images(NEW YORK) -- A seven-year-long NASA mission has come to an end with the first asteroid sample collected in space. This capsule, the size of a microwave oven, landed safely on Sunday morning to a crowd of cheering spectators -- a bit earlier than planned but exactly in the manner it was supposed to land. Before it landed, the capsule's cover was ejected at 102,000 feet above Earth's atmosphere, and rogue parachutes were deployed to stabilize it. Operations for the capsule have begun. It will take several hours to recover and process it, officials said. Back ...

Keegan Barber/NASA via Getty Images(NEW YORK) -- A seven-year-long NASA mission has come to an end with the first asteroid sample collected in space. This capsule, the size of a microwave oven, landed safely on Sunday morning to a crowd of cheering sp...

OSIRIS-REx’s mission to scoop up part of an asteroid launched seven years ago and traveled 200 million miles.

Interplanetary dust particle (IDP), also called micrometeoroid, micrometeorite, or cosmic dust particle, a small grain, generally less than a few hundred micrometres in size and composed of silicate minerals and glassy nodules but sometimes including sulfides, metals, other minerals, and carbonaceous material, in orbit around the Sun. The existence of interplanetary dust particles was first deduced from observations of zodiacal light, a glowing band visible in the night sky that comprises sunlight scattered by the dust. Spacecraft have detected these particles as far out in space nearly as th...

Comets are icy leftovers from the formation of the solar system. Explore these 'dirty snowballs' in more detail with our ultimate comet guide.