A project to produce more than double the number of galaxy distance measurements than all other previous surveys combined, could lead to an explanation of one of nature’s biggest mysteries.
In 1998, astronomers announced that the expansion of the universe is not slowing down as many people had thought, but rather is speeding up. To account for this, scientists have invoked an invisible force called “dark energy”, which makes up 75% of the cosmos’ total of energy and matter in the cosmos. Dark energy opposes gravity, and makes the universe want to spread out.
