Dark energy, given credibility in the 1990's by the study of Type 1a supernovas, has been confirmed by two other methods in an Australian galaxy survey.
Dark energy is real
Dark energy is real
Only in Australia would we name a science experiment after four guys in coloured skivvies :lol:A survey of more than 200,000 galaxies led by Australian astronomers has shown that ‘dark energy’ is real and not a mistake in Einstein’s theory of gravity.
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Using the Anglo-Australian Telescope, 26 astronomers contributed to the ‘WiggleZ Dark Energy Survey’ which mapped the distribution of galaxies over an unprecedented volume of the Universe. Because light takes so long to reach Earth, it was the equivalent of looking seven billion years back in time – more than half way back to the Big Bang.
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WiggleZ used two other kinds of observations to provide an independent check on the supernovae results. One measured the pattern of how galaxies are distributed in space and the other measured how quickly clusters of galaxies formed over time.
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The WiggleZ observations were possible due to a powerful spectrograph located at the Anglo-Australian Telescope. The spectrograph was able to image 392 galaxies an hour, despite the galaxies being located halfway to the edge of the observable Universe.