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Cosmic explosions reveal where the “lost matter” in the universe is

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Cosmic explosions reveal where the “lost matter” in the universe is

In a press release, Jean-Pierre Macquart, principal investigator for this project, explained that the case of “lost matter” was a scientific “embarrassment”: “We know from the Big Bang measurements how much matter was at the beginning of the universe. But when we look at the current universe, we cannot find half of what should be there ”.

Finding it would not be easy with traditional methods, since the missing matter was so dispersed by the immensity of space that it would be “like finding one or two atoms in a room the average size of an office”. That is why they used the mysterious rapid explosions to “determine the density of the universe”.

Six of these phenomena were enough to unravel the unknown. All were captured by the Australian SKA Pathfinder Telescope, a set of radio telescopes spread across four thousand square meters of area. "It has a wide field of view, about 60 times the size of the Full Moon, and can generate high-resolution images," described Ryan Shannon, co-author of the study.

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