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

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

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 ...

Photo Credits: NASA Facts you didn't know about our solar system From icy rings to salty moons, here are some amazing solar system facts from BBC you may not have heard before. Photo Credits: NASA ...

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 ...

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!

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 ...

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 ...

Today there are five known dwarf planets in the Solar System. The conditions for what classifies a “planet” as opposed to a “dwarf planet” were set by the International Astronomical Union.

The main screen of the app lists all the planets in our solar system. Tap on one of the planet names, and you get a screen listing the planet’s stats: mass, orbital radius, eccentricity, the ...