National Aeronautics and Space Administrion

Since its inception in 1958, NASA has accomplished many great scientific and technological feats in air and space. NASA technology also has been adapted for many nonaerospace uses by the private sector. NASA remains a leading force in scientific research and in stimulating public interest in aerospace exploration, as well as science and technology in general. Perhaps more importantly, our exploration of space has taught us to view Earth, ourselves, and the universe in a new way. While the tremendous technical and scientific accomplishments of NASA demonstrate vividly that humans can achieve previously inconceivable feats, we also are humbled by the realization that Earth is just a tiny "blue marble" in the cosmos. Check out our "Thinking About NASA History" folder online as an introduction to how history can help you.

Sunday, March 18, 2012

Neptune


On September 23,1846, Neptune was discovered by Gohann Gottfied Galle. It is 2.8 billion miles from the sun. It takes 164 years to orbit the sun. It does have some faint rings. It has two main moons called Triton and Nereid and 11 smaller ones.

Tritan is Neptunes biggest moon. Its diameter is 1680 miles. It orbit is the wrong way. This moon is circling Neptune and will eventually shatter.

Neried is the third largest moon of Neptune only 211 miles across. It is also known as Neptune II.

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