Microbial mats that existed on sea floors prior to the Cambrian explosion provided the foundation for early animal life to arise, new research looking at trace fossils of that early life has found.
Legendary astronaut John Young, who walked on the moon and later commanded the first space shuttle flight, has died, NASA said Saturday. Young was 87.
NASA has bumped an astronaut off an upcoming spaceflight, a rare move for the space agency so close to launch.
Christa McAuliffe's lost lessons are finally getting taught in space.
NASA found heavy rainfall in Tropical Cyclone Berguitta as it closed in on Mauritius and Reunion Islands.
At NASA's Goddard Space Flight Center, the Parker Solar Probe is lowered into the 40-foot-tall thermal vacuum chamber. Why?
Two US astronauts floated outside the International Space Station on Tuesday for a seven-hour, 24-minute spacewalk to repair the orbiting outpost's aging robotic arm, NASA said.