March 11, 2014
Astronomers have announced a view of the universe though a lens more than 500,000 light years wide, as part of a program called “Frontier Fields” to search for the first galaxies.
The “lens” is actually a massive cluster of galaxies known as Abell 2744. As predicted by Einstein’s Theory of General Relativity, the mass of the cluster warps the fabric of space around it. Starlight passing by… read more