The Moon passes 0.4° south of the bright red giant Antares in Scorpius this morning at 4 A.M. EST. The pair is visible in the ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

Readers’ photos celebrate sunrises and sunsets, when the light is the most pleasing. Fifty-one photos were sent in; here are ...

The iridescent cloud reveals new clues about ice formation in the Martian atmosphere (no little green men, sorry).

Mississippi stargazers will be able to see 4 or 5 planets in the night sky with their naked eye this month. Will you be able ...

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

The Sun sets differently on Mars. Part of that is due to its distance from the star (an average of 142 million miles versus ...

The area near clouds is often classified as ‘clear sky’, but a new study demonstrates the potential biases of misclassifying ...