• Question: Why do we have stars?

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      Asked by Sismyke to Alex, Anaïs, Peter, Sarwat, Shreesha on 11 Mar 2015.
      • Photo: Sarwat Iqbal

        Sarwat Iqbal answered on 11 Mar 2015:

        The Inflation caused the universe to rapidly expand, blowing up quantum-scale fluctuations into very large scale structure. This caused some parts of the universe to become more dense than other parts. We see this as temperature fluctuations in the Cosmic Microwave Background. These dense areas were what eventually collapsed to form the first stars and galaxies.
        I think stars help us to decide what direction is what? like, the Northern Star helped the slaves escape to the North. Stars are also used to help light up the night like the moon does.

      • Photo: Anaïs Pujol

        Anaïs Pujol answered on 12 Mar 2015:

        The stars that you see by eyes come from our galaxy. Stars are born from cloud rich in hydrogen gas that you can find in nebula. You can find nebula only in galaxy.

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