One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at its closest point to Earth in its orbit, and Hall had one question on his ...

See the crescent moon shine with Mars at sunset on Sept. 24. The crescent moon shines close to Mars above the western horizon ...

This significant time difference is like a mysterious code, hiding the complex and fascinating scientific secrets behind interstellar travel, and it is also the starting point for our exploration of ...

Northrop Grumman in Gilbert showed off the progress they have made on the NASA HALO capsule. The capsule will eventually be launched into space and orbit the Moon, providing a pit stop for astronauts ...

December's full moon, also known as the "cold moon," will shine bright in the night sky this Wednesday, peaking at 11:08 p.m. ET. The video featured is from a related report. Jupiter, Saturn and Mars ...