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Could a Gamma Ray Burst Destroy the Earth?
- A burst of gamma rays could destroy life on earth. Learn more about gamma rays and mass extinction in this HowStuffWorks video.
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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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