Largest ever map of universe's dark matter created by astronomers The new map covers a quarter of the southern hemisphere’s sky. By Press Association Thursday 27 May 2021, 7:07 PM 2 hours ago 7,573 Views 3 Comments Image: Dark Energy Survey Collaboration Image: Dark Energy Survey Collaboration RESEARCHERS HAVE CREATED the largest ever map of dark matter, invisible material thought to account for 80% of the total matter of the universe. As matter curves space-time, astronomers are able to map its existence by looking at light travelling to Earth from distant galaxies. If the light has been distorted, this means there is matter in the foreground, bending the light as it comes towards us.