Scientists have detected a signal from what may be the universe’s first stars, which started shining about 180 million years after the Big Bang, reports Space.com. The signal was so strong, scientists think it may have been caused by early star material interacting with dark matter.

Why it matters: "It’s quite possible that this is worth two Nobel Prizes,” if the interpretation is correct, theoretical astrophysicist Avi Loeb of Harvard University told Science News. One prize for finding cosmic dawn, and another because of the implications for understanding dark matter.