Get to Know the Universe
The solar system is our local neighborhood in the Milky Way Galaxy.
A planet is a spherical ball of rock and/or gas that orbits a star. Our solar system has 8 planets; in order of increasing average distance from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. It also has a growing number of dwarf planets (Pluto is one!), countless numbers of comets, a flock of moons, and thousands of asteroids.
Stars are balls of mostly hydrogen and helium gas that shine extremely brightly.
- Closest Stars to Our Solar System
- Brightest Stars Seen From Earth
- Constellations Pictures Gallery
- Definition of Stars
- Pictures of Stars
Deep Space Objects
Learn more about nebulae, star clusters, black holes, quasars and other deep space objects.
- The Inescapable Truth About Black Holes
- Definition of Black Hole
- Black Holes Pictures
- Books About Black Holes
- Fictional Black Hole Movies
- Definition of Galaxy