This may explain the strange properties of the orbits of our solar system's planets, which are not quite perfectly circular, ...

A layer of diamonds up to 18 kilometers (11 miles) thick could be tucked below the surface of Mercury, the solar system’s smallest planet and the closest to the sun, according to new research.

This week Mercury joins the queue. Now every other world in our solar system will be visible among the stars at the same time — if you know where to look. According to Gerard van Belle ...

Inner dark comets can be found within the inner solar system, which includes the planets Earth, Venus, Mars and Mercury, and move in nearly circular orbits around the sun. The celestial objects ...

Sky gazers across the U.S. will have a chance to see an extraordinary celestial event on Friday as all of the planets in our solar system will ... parade," will feature Mercury, Venus, Mars ...

All of our solar system’s planets are lining up in the ... while by the time the sky is completely dark, Mercury and Saturn will have sunk below the horizon, with Neptune and Venus following ...

The BepiColombo spacecraft has sent back some incredibly detailed images of Mercury’s north pole. The snapshots were collected during its closest ever flyby of our solar system’s smallest planet.

How our own Solar System came to be ... giant impact is thought to have torn away the outer layers of the young Mercury, leaving a small planet dominated by its iron core. Radiation from the ...

All of our solar system’s planets are lining up to parade ... An alignment including all of the planets except Mercury is taking place in mid-January. Uranus and Neptune, being the most distant ...

Created just a split second after the Big Bang, these hypothetical black holes would whip quietly through the solar system roughly ... Venus and Mercury could veer off their original course ...