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

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' ...

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...

A world-leading designer of space robots says gigantic new rockets being tested by billionaires Elon Musk and Jeff Bezos are ...

Mars's atmosphere and climate are impacted by interactions with solar wind, a stream of plasma comprised of protons and ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – here’s how to spot the celestial show ...

HELENA — The planets are aligned. Six planets, Mars, Jupiter, Uranus, Neptune, Venus and Saturn can be seen in the night sky.

The ‘Martian dichotomy’ is one of the Solar System’s greatest mysteries – but new research in closing in on a solution.

The solar system consists of 8 planets, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each ...

The planet is the seventh largest and is currently inhabited solely by robots. However, the space agency is working hard to ...