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What is Dark Matter?
- Watch this video about theoretical cosmology on HowStuffWorks. What is dark matter? Is the universe speeding up? University of Chicago Professor Michael Turner clarifies how theoretical and experimental cosmologists challenge each other to unravel the deep mysteries of the universe. Copyright 2003 The University of Chicago.
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The End of the Era of Stars
(3:04)
Some experts believe the galaxy will eventually be devoured by black holes.
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Space Week: Space Station and Beyond 1
(1:21)
For the privileged few, the view from the International Space Station is ever-changing and always amazing. Learn more about the International Space Station in this video.
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Space Week: Space Station and Beyond 2
(2:41)
A mission to Mars will be an expensive, long-term endeavor, but it's a dream that inspires the next generation of spacefarers. Learn more about the mission to Mars in this video.
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Shape of the Universe
(2:34)
Learn about the forms and contours of the universe.
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Does Earth have a Twin?
(0:51)
Watch this Reuters video showing a computer mock-up of the smallest planet ever found outside our solar system, and it could be very similar to Earth. The new planet is circling a small red dwarf star 30 light years away in the constellation of Leo.
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Humans Already on Mars
(0:37)
Have humans already landed on Mars? Watch this Reuters video of new pictures taken by NASA's Spirit Rover that shows an image resembling a human shape on Mars. NASA is planning more investigation.
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Shooting Stars: Meteors and Meteorites
(1:31)
Shooting stars come in the wake of comets and are commonly known as meteors.
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Physics: Primal Forces
(2:53)
Learn about the primal forces of the universe-gravity, electromagnetic, the Strong and Weak nuclear force.
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