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 ...

A space probe flying past Mars captured images of the red planet's small, mysterious moon. While on a flyby of Mars, Hera was able to use three of its imaging instruments to capture images of Deimos, ...

Just four days after it passed in front of the Pleiades star cluster, the moon will cross paths with another noteworthy celestial object on Monday evening, Jan. 13, when it will cover the planet Mars, ...

The full moon will pass in front of the planet Mars on Monday night, Jan. 13. For the Duluth region it will cover the planet for just over an hour from 8:13 to 9:12 p.m. local time. Earlier in the ...

Gravity and motion make time pass faster on Mars than Earth, reshaping navigation, communication, and future crewed missions.

Ask someone on Earth for the time and they can give you an exact answer, thanks to our planet's intricate timekeeping system, ...