Physical Cosmology

How would a galaxy form from the bottom up?
Answered by Science Channel
  • Science Channel

    Science Channel

  1. Both bottom-up and top-down galaxy formation theories revolve around gravity and its collapsing effects on gas in early galaxies. Bottom-up theories propose that this gas collapsed and compressed into clumps the size of a million suns. These smaller clumps (cosmically speaking) then got together to form enormous galaxies, like the Milky Way.

    More answers from Science Channel »

Still Curious?
  • How far away is the nearest O star?

    Answered by Dr. Lisa Prato

  • How does gravity propel a satellite forward?

    Answered by Discovery Channel

  • What discovery would you like to be remembered for?

    Answered by Dr. Lisa Prato


What are you curious about?

Image Gallery