Tryptophan, the essential amino acid behind the Thanksgiving myth that eating turkey can make you sleepy, has been found to ...

There are 20 amino acids that create the proteins required for life on our planet — and scientists have now found exactly 14 of them on an asteroid millions of miles away. The asteroid in question, ...

An artist's rendering depicts the OSIRIS-REx spacecraft contacting the asteroid Bennu with the Touch-and-Go Sample Arm Mechanism. In samples taken from a distant asteroid, scientists have discovered a ...

TUCSON, Ariz. (KGUN) — It’s been a real point of pride that the University of Arizona led a mission to grab a sample of an asteroid and bring it to Earth. Now those samples are teaching us more about ...

Tim McCoy, right, and Cari Corrigan, meteorite researchers at the Smithsonian's National Museum of Natural History, look at images of asteroid Bennu samples taken by a scanning electron microscope.

Credit: NASA/Erika Blumenfeld & Joseph Aebersold Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of ...

The rocks and dust collected from asteroid Bennu hold amino acids, ammonia and other molecules essential to life on Earth, NASA reported Wednesday. The findings suggest the conditions necessary for ...

NASA Planetary Scientist Noah Petro dishes on what it took plan the impressive touch-and-go return mission, why much of the ...

Science has made great progress in telling the story of how Earth was formed more than four and a half billion years ago. Volcanic eruptions, earthquakes, and plate tectonics shape the landscape. But ...

The UA is headed back out to space with a new NASA mission in roughly three weeks. Asteroid hunter OSIRIS-REx is scheduled for liftoff on Thursday, Sept. 8. The pretty damn cool science mission, led ...

The University of Arizona behind OSIRIS-REx talk about the space robot like it’s their baby, because it is: They built it, they raised it (it takes a village, you know), and when the time came last ...