• Question: What is the real power of the sound? Why do black holes exist?

    Asked by to Claire, Sergey on 27 Jun 2014. This question was also asked by .
    • Photo: Sergey Lamzin

      Sergey Lamzin answered on 27 Jun 2014:

      The real power of sound is being able to carry your voice to other people and enable you to communicate verbally.

      We do not know wether black holes have a purpose. They exist because over the billions of years that the universe existed some stars have pulled together and created gravity centres that even light can’t escape (that’s why they are black). They are not technically holes though 🙂

      They have one use that we know: They hold the galaxies together.

    • Photo: Claire Shooter

      Claire Shooter answered on 27 Jun 2014:

      I think there’s a black hole behind my sofa

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