All of our solar system’s planets are lining up to parade through the night sky ... Read more This mind-blowing map shows Earth’s position within the vast universe Never is this more apparent than ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

Spotting one or two of the planets in our solar system is well worth a good skywatch, but seeing (almost) all of them in a ...

one which can offer superb views of the other bodies in the solar system. But which one to choose? We've got you covered with our guide to the best telescopes for seeing planets. Now's a great ...

The Red Planet will be at its closest point to Earth, also known as perigee, on Jan. 12 and will be exactly opposite the sun on Jan. 15. It will be visible all night long because it will rise with the ...

This may explain the strange properties of the orbits of our solar system's planets, which are not quite perfectly circular, and all lie on slightly different planes. NASA artist’s conception of ...

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

On Feb. 24, from west to east, you can see Mercury, Saturn, Neptune, Venus, Uranus, Jupiter and Mars, all spanning 117.5°, ...

These embryos, somewhere between small planetesimals and fully formed planets, were abundant during the solar system's formative ... in the earliest days of our cosmic neighborhood.

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...