Astronomers are narrowing down on the evidence of the universe in its dark ages by searching for the faint 21-centimeter radio signal emitted by early-day hydrogen. It is a very faint emission, which happens due to a…

Astronomers are narrowing down on the evidence of the universe in its dark ages by searching for the faint 21-centimeter radio signal emitted by early-day hydrogen. It is a very faint emission, which happens due to a…