An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

But of these planets, which is nearest to the sun? Mercury is a strange little world. There are some craters on its surface that never see sunlight. It also has the most extreme temperatures of ...

Like a celestial parade across the cosmos, five bright planets are lighting up the night sky and visible with the naked eye ...

ESA's Solar Orbiter captured views of the planet Mercury passing in front of the Sun. Multiple instruments aboard the spacecraft captured the imagery. Credit: Space.com | footage & orbit animation cou ...

Multiple planets will appear to be aligned in the night sky in a parade of planets throughout February, astronomers say, an ...

The BepiColombo spacecraft captured the photographs during its last flyby of Mercury, a maneuver necessary to propel the mission into orbit around the planet Margherita Bassi Daily Correspondent ...

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

The joint European-Japanese mission is only the second survey of Mercury, the least explored planet in the inner solar system.

Europe's BepiColombo mission will enter orbit of the solar system's first planet in about two years, but it's been whizzing past Mercury regularly as it lines up its approach. The ESA reports that ...

If it’s real, some may question whether something with a mass about three times Pluto’s counts as a planet at all.

“We needed nine flybys (one at Earth, two at Venus, and six at Mercury) to slow down our spacecraft and bring it into a good position to enter the orbit of Mercury.” Sequence of 89 images ...