A comical planetary beauty contest is described, highlighting the unique traits of each planet: Mercury’s fiery nature, Venus ...

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

For decades, we believed there were nine planets in our solar system—until Pluto was reclassified in 2006. But what if ...

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

The OSIRIS-REx mission returned to the sample to Earth in September of 2023, and these studies show that it contains amino ...

The planetary parade in February 2025 will see five bright planets in clear view and a special alignment of Mercury and Saturn ...

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 ...

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may not be the full picture.

People will be able to see a rare sight at the end of this month when all seven other planets in our solar system line up in the night sky. For the last few weeks six of the planets have been ...

Samples from asteroid Bennu have delivered insights into the origins of Earth’s water and the organic molecules that may have ...