Parker Solar Probe Makes History by Touching the Sun 8 million miles above the Sun's surface on December 24, 2024, traveling ...

Mercury is the innermost and smallest of the eight major planets in our Solar System, orbiting closest to the Sun. Though ...

Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of "Ask a Spaceman" and "Space Radio," and author of "How to Die in Space." Sutter contributed this article to ...

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 is the star at the center of ...

A compilation of unexpected facts about the planets in our solar system. Photo courtesy of NASA Despite being the second planet from the sun, Venus' atmospheric thickness and composition make its ...

Facts you didn't know about our solar systemGanymede, Jupiter’s biggest moon, hides a salty ocean under its surface. It might even hold more water than Earth. Jupiter’s moon may have more water than ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Comet ISON barreled past Mars last week on its way toward a close encounter with the sun that has ...

Southwest Research Institute (SwRI) scientists believe they may have resolved a 39-year-old mystery about the radiation belts ...

From a bar in the clouds to finding more water from the Moon, outer space is constantly surprising us. Think back to what you learned about astronomy in elementary school. If you’re like most people, ...