Isaac Asimov described the solar system as the sun, Jupiter, and debris. He wasn't wrong—the sun is 99.8 percent of the mass of the solar system. But what is that giant ball of fire in the sky?

With its beautiful rings, Saturn may be the most stunning planet in the solar system. It is the sixth planet from the sun and ...

Sun-related topics take on special importance for people with lupus. Here are five facts that will help you be safer in the sun. UV rays are not all the same. When we talk about sun exposure, what we ...

The solar system is our cosmic neighborhood, made up of the sun and everything that orbits it — planets, moons, asteroids, comets, and even dust and gas. The order of the planets in the solar ...

Pros: Mineral sunscreens offer instant broad-spectrum protection, and are safer for sensitive and acne-prone skin. Cons: ...

The third rock from the Sun—and to this day, the only one with known intelligent life—there are plenty of fun Earth facts that we all learned from a young age. Still, there are even more ...