• Question: Is our universe shrinking or growing?

    Asked by penguinsrock66 to Catherine, Charlotte, Colin, Becki, Rick on 20 Jun 2013.
    • Photo: Rebecca Scott

      Rebecca Scott answered on 20 Jun 2013:

      I think the universe is expanding… I found this website which has some cool info http://skyserver.sdss.org/dr1/en/astro/universe/universe.asp

    • Photo: Charlotte Dalton

      Charlotte Dalton answered on 20 Jun 2013:

      yep like Becki said at the moment it is expanding (or so we think anyway) but who knows if it will stop and what would happen if it did??

    • Photo: Colin Swift

      Colin Swift answered on 20 Jun 2013:

      Still growing. You can tell some stars and galaxies are moving away from us via means of their red shift – an equivalent in light of the doppler shift – the way a for example siren on a police car changes pitch as it drives past – higher pitch when approaching, lower when leaving. The optical red shift (lowering of the frequency of light) tells us that many galaxies are moving away from ours.

    • Photo: Catherine Fontinelle

      Catherine Fontinelle answered on 24 Jun 2013:

      Hi @penguinrocks

      Not sure but we keep finding smaller and smaller things, so maybe the reverse is true?

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