The Latest Breaking News from Solar System

On any clear night, if you gaze skywards long enough, chances are you’ll see a meteor streaking through the sky. Some nights, however, are better than others.

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.

When considering human settlements on the Moon, Mars and further afield, much attention is given to the travel times, food and radiation risk. We’ll undoubtedly face a harsh environment in deep space and some thinkers have been pointing to genome editing as a way to ensure that humans can tolerate…

Signs of life could survive on the icy surfaces of Saturn's and Jupiter's moons, Enceladus and Europa, despite harsh radiation bombardment from the sun and supernovas.

Astronomers are proposing a new, more quantitative definition of what makes a planet. The new definition looks more directly at the object's mass — but it would still leave Pluto out of the running.

Indulge yourself in a special birthday cake hunt onsite competition to celebrate our 25th anniversary.

It's been a long ride for exoplanet science — and for Space.com itself.

Apart from the Sun, its planets and their moons, our Solar System has vast amounts of space rocks – fragments left over from the formation of the inner planets.

Black holes aren't "cosmic vacuum cleaners," but what would happen if one wandered into our solar system?

'Dark comets,' which have no visible tail, could also explain the strange behavior of the interstellar object 'Oumuamua.

The size of the solar system is defined by the volume of space over which the Sun’s influence exceeds those of other nearby stars in the Milky Way galaxy. This influence derives from two fundamental forces of nature: gravity and magnetism.