By tracing the corkscrew wobble of two stars as they move through the sky, the Gaia space mission has discovered one new ...

It's not uncommon for a few planets to align - all it requires is for them to be on the same side of the Sun as the Earth. But it's quite rare for six planets to align, and even rarer for seven.

Stargazers will be treated to a dazzling six-planet "alignment" this January.

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

There are eight planets in the solar system, and each travels on its own path around the sun. But of these planets, which is nearest to the sun? Mercury is a strange little world. There are some ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

Our sun and its planets arose when the universe was about 9 billion years old, and the oldest known planet developed 1 billion years into the life of the universe. Receive a weekly dose of ...

These events are often called a planetary alignment, but planets always appear in a line in the sky because they orbit the sun — the difference is that they will appear closer to each other and ...

Planets, the moon and sun move in front of the same twelve zodiac constellations during their normal cycles, Farmer's Almanac said. It's only occasionally that their speeds and positions align.