The "Great Bear" of the constellation Ursa Major will become visible around the time Mercury slips out of view, with the ...

July's full moon -- known as the Buck Moon or the Thunder Moon -- will light up the night sky on July 10 and be at its ...

Spot overlapping meteor showers this month, along with the Moon sharing the sky with some of the brightest planets.

Mars shines in the evening, and is joined briefly by Mercury. Jupiter joins Venus as the month goes on. And all month, look ...

By discovering carbonate rocks, NASA's Mars rovers may have unlocked the key to understanding the fate of the Red Planet's climate.

One of the great unsolved problems in modern planetary science is written on the surface of Mars. Mars has canyons that were ...