Previews + Extras
The Milky Way and Andromeda Galaxies will Someday Collide
S48 E16 - 2m 56s
Astronomers estimate that in about 4.5 billion years, the Milky Way and Andromeda galaxies will collide. Here's how it'll happen.
Gaze at Galaxies with NASA's Hubble Space Telescope
S48 E16 - 2m 44s
Since its 1990 launch, the Hubble Space Telescope has allowed scientists to peer deep into space and far back in time to understand the diversity of galaxies in our universe.
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