History

Resources

Explorations in 2013 Find out about scheduled missions to our solar...
Explorations in 2011 Find out about scheduled missions to our solar...
Earth’s Moon Earth's partner in its yearly trek around the...
Facts and Figures The biggest, farthest and fastest in the...
Astronomers and Observatories
Remnants from the Beginning Whenever you build a new house, you always have...
Realm of the Giants The region beyond the asteroid belt is the realm...
Exploring Our Own Back Yard The four planets closest to the Sun -- Mercury,...
Gemini, the Twins Gemini is easy to find as it glides high...
Taurus, the Bull Taurus, the bull, is marked by a V-shaped...
Sagittarius, the Archer Sagittarius, the archer, slides low across the...
Ursa Major, the Great Bear Ursa Major — the great bear — is always above...
Finding Earth-Like Planets Astronomers have discovered far more planets...
Exoplanets As the list of known planets beyond the solar...
Pluto After 76 years of glory, the small ball of rock...
Equipment Tips The only instrument that most beginners need is...
Pick a Good Viewing Spot Your own back yard will do just fine. Then, as...
What to Look For
Venus Cloud-covered Venus is the second planet from...
Become a Stargazer
Explorations in 2009
Explorations of Minor Bodies When Comet Halley last passed through the inner...
Explorations of Outer Planets Pioneer 10 and 11 blazed the trail to the outer...
Explorations of the Inner Solar System The Soviet Union's Luna 3 solved an ancient...
Our Star, the Sun By human standards, the Sun is eternal. It rises...

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