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 ...

When a meteor streaks across the sky, it's not just beautiful. It's nature's way of delivering a time capsule to Earth.

Our solar system is only one out of hundreds of stellar systems residing in the Milky Way galaxy. It’s comprised of the Sun and eight known planets, half of which are Terrestrial (sporting solid, ...

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 ...

Comet ISON barreled past Mars last week on its way toward a close encounter with the sun that has had scientists and skywatchers buzzing for a year. Comet ISON flew by Mars on Tuesday (Oct. 1), then ...

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 ...

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 ...

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 ...

The outer planets of the solar system are swarmed by ice-wrapped moons. Some of these, such as Saturn's moon Enceladus, are ...