Astronomy
Astronomy is a broad discipline covering all facets of astrophysics. In this section you can learn about the origins of the universe, black holes and other astronomical phenomena. See more »
what's inside: space channel
Explore the vast reaches of space and mankind’s continuing efforts to conquer the stars, including theories such as the Big Bang, the International Space Station, plus what the future holds for space travel and exploration.
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Future Space
What is the future of space travel? Explore the technologies we’ll use to visit the stars in the near and not-so-near future, from space planes to robonauts. See more »
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Spaceflight
Spaceflight covers topics related to human presence in outer space. Learn about weightlessness, astronauts and space tourism in this section. See more »
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Space Exploration
Space exploration is a broad topic covering many facets of deep-space and planetary science. Learn about space probes, Mars Rovers, SETI and other out-of-this-world subjects. See more »
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Space Transportation Systems
Space Transportation Systems (STS) are the systems and architectures that deliver payloads and humans to outer space. Learn about space shuttles, rockets and other spacecraft. See more »
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featured articles
How the Leonid Meteor Shower Works
Every November, the Leonid meteor shower fills the sky with "shooting stars." This year, the shower is expected to peak twice. Learn how Leonid and other meteor showers work.
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videos: space
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How Lunar Eclipses Work
The only thing that's lurking in the shadows during a lunar eclipse is the moon. When Earth's shadow blocks sunlight from directly illuminating a full moon, you're witnessing a lunar eclipse.
What is astrophotography?
If your idea of photographing the stars has nothing to do with Hollywood, you might be interested in astrophotography -- the sky's literally the limit.
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