4 Matching Annotations
  1. Nov 2019
    1. "critical density"

      Gives one main point of this article

    2. If the density is less than the critical density, then the universe will expand forever.

      I rather have the Big Freeze happen because I don't want to be crushed by the universe, it doesn't sound very fun.

    3. Astronomers are still trying to accurately measure the shape of the universe.

      Will their telescopes be able to see out that far?

    4. Scientists rely on a value known as "critical density" to make predictions about the shape of the universe.

      To find out how much density is in the universe in different areas, do they find it through the telescope or on a computer?