Solar System News
NASA, Library of Congress Select First Astrobiology Chair

4/16/12 - NASA and the Library of Congress have announced the selection of David H. Grinspoon to be the first Baruch S. Blumberg NASA-Library of Congress Chair in Astrobiology.

NASA Planning Group Takes Key Steps for Future Mars Exploration

4/13/12 - NASA's Mars Program Planning Group (MPPG), established to assist the agency in developing a new strategy for the exploration of the Red Planet, has begun analyzing options for future robotic missions and enlisting the assistance of scientists and engineers worldwide.

Planets

What is a planet? How many planets are there in our solar system? Is Pluto a planet? Are there planets in our solar system that have not been discovered yet? To find out the answers to these questions and more, visit the planets!

planets

The Sun

What is the Sun? Does the Sun have another name? How big is the Sun? Is the Sun a unique celestial object? To find out the answers to these questions and more, visit the Sun!

moons

Moons

What is the difference between a moon and a planet? How many moons are there in the solar system? How was the Earth's moon formed? What is the largest moon in the solar system? To find out the answers to these questions and more, visit the moons!

Other Bodies

What is a dwarf planet? Where do comets come from? How many asteroids are there in the solar system? What is the Kuiper Belt? To find out the answers to these questions and more, click here!

Mercury

Educational Tools

If you are looking for a top-notch interactive Solar System model, visit here! If you're looking for websites to help with not only planets related information, but also general education materials as well, click here!.

Did You Know?
The Sun accounts for 99.8% of the total mass of the Solar System.
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