The world will witness a rare sighting in the sky in late February, one known as the seven-planet alignment. Venus, Mars, Jupiter, Saturn, Uranus, Neptune, and Mercury will all be visible together ...

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 ...

Stargazers will be treated to a rare alignment of seven planets on 28 February when Mercury joins six other planets that are already visible in the night sky. Here's why it matters to scientists.

The seven planets will not be perfectly aligned, but will appear in an arc across the sky due to their orbital plane in the Solar System. The world will witness a rare sighting in the sky in late ...

However, this year a powerful new telescope is coming online that could prove once and for all that there really is a ninth planet in our Solar System. The same year that Pluto was ignominiously ...

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 ...