Explore how our ideas about the Universe evolved as we developed new astronomical instruments.
Learn about the solar system and the group of planets that circle around the sun.
Wonder in space, and learn about missions that are helping us appreciate the cosmos today.
Fly through the solar system, planets, and beyond as you explore cosmic mysteries.
Interactive view of the Solar System to explore our cosmic neighbourhood.
Demonstrate what you have learned about space and the solar system.
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Read MoreOn October 4, 1957, the Soviets launched the first artificial satellite, Sputnik 1, into space. Four years later on April 12, 1961, Russian Lt. Yuri Gagarin became the first human to orbit Earth in Vostok 1. His flight lasted 108 minutes, and Gagarin reached an altitude of 327 kilometers (about 202 miles).
Read MoreA rocket escape test goes flawlessly while NASA monitors Hurricane Matthew from space.
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