Astronomers have recently detected a rogue planet entering our solar system, marking a rare event that has sparked ...

From planets that rain diamonds to moons with hidden oceans, the Solar System holds more mysteries than most realize. These ...

There are so many interesting solar system facts, here are some of our favorites. For about a quarter of each Uranus year (or 21 Earth years, as each Uranus year is 84 years long), the sun shines ...

New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...

These strange objects could explain how water arrived on Earth, but may also be a previously unrecognised threat to our ...

Quick facts about the sun How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun ...

Related: ' Oumuamua: The solar system's 1st interstellar visitor explained in photos To date, there have been no detections of any extrasolar objects currently in orbit around the sun. The best we ...

The inner solar system spins much more slowly than the laws of modern physics predict, and a new study may help to explain why. A thin disk of gas and dust — known as an accretion disk ...

Earth Day is April 22 — think you know the planets? Test your knowledge of the solar system in this fun and engaging lifestyle quiz — and see how well you do!