Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.

Earth is home to some truly bizarre and breathtaking landscapes — here are 20 that look straight out of an alien world.

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

Four planets will be in the parade in January, while seven will align in February. Here's how to see the events.

Stargazers, prepare for the parade of planets that will take place over the next few nights in the sky. Here's what you need ...

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

Starting up again Saturday, a sweeping view of our solar system will glow in the night sky. The planetary alignment, or a ...

Currently shining at its greatest brilliance for this current apparition, this dazzling evening "star" currently appears as a ...

Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could ...

Stargazers can witness a rare 'planet parade' in January and February 2024, where six planets align prominently in the night ...

An asteroid first spotted in December has a 1.2% chance of hitting Earth in 2032. Scientists are tracking the space rock to learn more about its size and trajectory.

The discovery of a planet that is just 20 light-years away has been said to be the closest Earth analogue that scientists ...