Solar System - Mars
Also known as the red planet, Mars is the fourth planet in distance from the sun. Discover more about Mars with these resources.
Solar System - The Sun
While some stars in our galaxy are nearly as old as the universe, about 15 billion years, our sun is a second-generation star. It is only 4.6 billion years old. Some of its material came from former stars. Learn more about the sun at the center of our solar system.
Inner Solar System; Astronomy and Space
Astronomy and space exploration links dealing with the inner solar system planets. Solar System - Mercury
Mercury orbits closest to the Sun of all the planets, and is the smallest. Mercury's diameter is 4,879 km (3,032 mi), and its volume and mass are about one-eighteenth that of Earth. Solar System - Venus
Venus is the second planet from the Sun and the sixth largest. Find out more about Venus with these links, news, information, and graphics. Solar System - Earth
Earth is the third planet in order of distance from the sun, and the only one capable of supporting life in the solar system. Find out more at these links to Earth. Solar System - Earth's Moon - Luna
Luna, the Earth's natural satellite, revolves around our planet. Here are astronomy links dealing with the Earth's moon. Don't stop with the first 2 links, there are more below the advertisement. Asteroids and Minor Planets
The Asteroid Belt stretches between Mars and Jupiter, containing a large number of small or minor rocky planetoids. Find our more about these asteroids. Solar System - Jupiter
Named after Jove, the chief god of Roman mythology, Jupiter is the fifth planet from the Sun and the largest planet in Earth's solar system. Find out more with these links to Jupiter. Solar System - Saturn
Saturn is the sixth planet in order of distance from the sun, and the second largest in the solar system. Find out more at these links to Saturn. Solar System - Uranus
Uranus, the seventh planet from the Sun and third largest, was the first planet discovered in modern times. Discover more about this gasseous planet. Solar System - Neptune
Neptune is the eighth planet from the Sun and the fourth largest (by diameter). Neptune is smaller in diameter but larger in mass than Uranus. Find out more at these links to Neptune. Solar System - Pluto
Pluto is the farthest planet from the Sun (usually) and by far the smallest. Pluto is smaller than seven of the solar system's moons (the Moon, Io, Europa, Ganymede, Callisto, Titan and Triton). Find out more about the planet Pluto. Meteors - Meteorites - Meteoroids
Whether it glows while passing through our atmosphere (meteor), actually strikes the Earth (meteorite) or safely passes through space (meteroid), you'll find information about it here. Outer Solar System; Astronomy and Space
Astronomy and space exploration links dealing with the outer solar system planets.
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