• Question: why does the universe expand?

    Asked by scornish to Cathal, Daphne, Darren, Jon, Katherine on 18 Mar 2012. This question was also asked by cr4b7.
    • Photo: Katherine Haxton

      Katherine Haxton answered on 18 Mar 2012:

      There is evidence to suggest the universe is expanding (look up Red-Shift), and an expanding universe fits with a lot of physics theories about the universe. This definitely isn’t my area of science, but this article is quite interesting: http://skyserver.sdss.org/dr1/en/astro/universe/universe.asp and explains it a bit.

    • Photo: Daphne Ng

      Daphne Ng answered on 20 Mar 2012:

      According to the big bang, the universe started from an infinitely small point and expanded. In fact, it is expanding at an increasing rate as galaxies are moving away from us at faster and faster speeds.

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