NASA astronaut Nichole Ayers photographed a rare atmospheric phenomenon over the US and Mexico known as a "sprite" that's associated with lightning.

NASA has found that almost 70 percent of astronauts on long missions report changes in their eyesight. The issue doesn’t just ...

NASA astronauts on ISS capture images of lightning from space The images McClain and Ayers shared show electrostatic discharges – in other words, lightning – from above the clouds as they ...

Two NASA astronauts steppes outside the International Space Station on Thursday to take part in U.S. Spacewalk 93, NASA's fifth-ever all-female spacewalk.

How NASA’s waylaid astronauts finally got home By Jackie ... a supernova explosion of a star known as SN 2014J in the galaxy M82 appears in a Hubble Space Telescope composite image. NASA ...

Support teams work around a SpaceX Dragon spacecraft shortly after it landed with NASA astronauts Nick Hague, Suni Williams, Butch Wilmore, and Roscosmos cosmonaut Aleksandr Gorbunov aboard in the ...