This site uses cookies to assist with navigation, analyse your use of our services, collect data for ads personalisation and provide content from third parties. By using our site, you acknowledge that you have read and understand our Privacy Policy and Terms of Use. The space between the galaxies is expanding. How big is it? Credit: NASA. Source: Universe Today. Citation : How are galaxies moving away faster than light? This document is subject to copyright.
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Improve this answer. Adrian Howard Adrian Howard 8, 3 3 gold badges 14 14 silver badges 28 28 bronze badges. Cort Ammon Cort Ammon 42k 4 4 gold badges 85 85 silver badges bronze badges. As for the lack of direct experimental evidence, I did word my last paragraph carefully. It certainly is not proof, but it is seen as evidence. Perhaps I am being presumptuous in claiming that expanding space is the preferred model, but as far as I am aware it is the current favorite.
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See Subscription Options. Go Paperless with Digital. Read more from this special report: A Tribute to Martin Gardner, Get smart. Sign up for our email newsletter. Sign Up. Support science journalism. This means that the more time that passes, the faster that galaxies are expanding. They continued to examine the speeds using the light of a supernova and this seemed to confirm their observations.
None of the results of the studies made any sense, because according to the laws of physics, an object should maintain the same original speed, unless something blocks it or an energy force is added to increase the speed. Scientists began to develop a theory that there might be some mysterious unknown force, like anti-gravity, that is actually pushing the galaxies apart.
If this is true, it would explain why the galaxies at the furthest end of the universe the ones that are the oldest are moving faster and faster away from us.
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