Long before any spacecraft can attempt a faster journey to Mars, scientists must first solve one of space exploration’s ...

NASA planetary defense experts warn that up to 15,000 undetected asteroids could devastate a major city on Earth.

Satellites have captured incredible views of the Feb. 17 annular solar eclipse as the moon's shadow swept across a remote ...

Researchers at the University of Hawaiʻi have uncovered new clues about how energy moves through the sun's outer atmosphere, using one of nature's rarest events as their window: total solar eclipses.

Scientists are proposing to build a laser in a crater on the moon to help future lunar missions land safely in the dark and find their way around. This ultra-stable light source could also help us ...