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Shape of the Universe (2:34)
Learn about the forms and contours of the universe.
Giants - Outer Planet Probe (3:34)
Scientists' long-held dream of a satellite space flight to the outer planets came to fruition during a rare planetary alignment in 1977.
Discoveries: Cosmic Rays (6:21)
Scientists are determined to find out where cosmic rays come from, so they're building a huge cosmic ray-catching net. Learn more about fishing for rays in this video.
Cosmos: Galaxy (2:32)
Carl Sagan journeys to a time when galaxies were beginning to form. Learn more about our cosmos in this video from Discovery.
100 Greatest Discoveries: Astronomy (3:46)
Scientists belive that the universe is not only expanding from the Big Bang, but also accelerating. Learn more about astronomy in this video from Discovery.


