LONDON: An exploding star has been seen by astronomers four separate times as a result of dark matter affecting the image, an Australian researcher has revealed.
A team of international scientists studying space using the Hubble Telescope found a supernova explosion appeared multiple times in different places due to the impact of gravitation on light.
Team member Brad Tucker from the Australian National University in Canberra said a cluster of galaxies and dark matter in front of the explosion had warped the way it looked.
“So if you actually look at how the light has changed over time in each of those four images, it is exactly the same origin, so it has to be the same event,” he said.
“The lead author Dr Patrick Kelly (of California) was actually looking through a set of images for an entirely different purpose and thought, ‘this looks a little funny’, and then consulted the rest of us.
“And we thought that it could be something that researchers have been looking for because [Albert] Einstein had predicted this impact on light and astronomers had spent decades trying to find something like this.”
Dr Tucker said the four images of the same event would allow scientists to probe how much mysterious dark matter there was in the universe.
“Dark matter is not uniform, it isn’t nicely spread across the universe,” he said.
“There’s clumpy bits in some areas and none in other spots, so this allows us to look closely at the structure of dark matter.”
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