Mercury, the closest planet to the Sun, is a world of blazing heat, freezing nights, and endless mysteries. Recent photos ...

The spectacular discoveries NASA's MESSENGER made about Mercury.

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

Most meteorites that have reached Earth come from the asteroid belt between Mars and Jupiter. But we have 1,000 or so ...

NASA also points out that July and August is an excellent chance to view the constellation Aquila, also known as the eagle as ...

Scientists have determined that Mercury, the closest planet to the sun, may contain a 10-mile thick mantle layer of diamonds based on data from NASA’s MESSENGER space probe, Space.com reported.

As the closest planet to the Sun, Mercury is exposed to the star's enormous gravitational field. And it's really stressful.

Using data from NASA's MESSENGER spacecraft, scientists have determined that the solar system's tiniest planet, Mercury, hides a not-so-tiny secret: a 10-mile-thick mantle of diamond.

Mercury could have a thick underground layer of diamonds, ... The last completed mission to Mercury, NASA’s MESSENGER, orbited the planet between March 2011 and April 2015.

NASA has confirmed the discovery of an Earth-sized planet parked right in the “habitable zone” of a distant red dwarf star.

Brevard's population skyrocketed 371% during the 1950s with Cape Canaveral missile testing, NASA and Project Mercury, ...

A meteor shower, a planet sighting, and a full moon. Here's how to see all of space's eye-catching activity in July.