We studied the properties of galaxies close to the Milky Way instead of looking billions of light years away. It's like traveling from Seattle to Portland, Ore., rather than from Seattle to New York, to measure the Earth's curvature.

Fabio Governato

Billions Close Galaxies Instead Light Looking Milky Properties Studied

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The observed motion was small, and we could not duplicate it without the presence of dark energy. When we added the dark energy, we got a perfect match.

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Adding dark energy changes the equation that describes the speed at which the universe expands with time and the growth of density perturbations.

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There may be aliens in our Milky Way galaxy, and there are billions of other galaxies. The probability is almost certain that there is life somewhere in space.

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These are very normal, nearby elliptical galaxies that they studied, and if those galaxies don't have dark matter it calls into question the whole theory of cold dark matter.

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Usually we are illuminating things instead of looking at the light itself. But I like this quality of the light being the revelation.

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