Astronomers have discovered a strange new signal coming from an exploding star — a “chirp” that speeds up over time, similar to the signals seen when black holes collide. The unusual pattern appeared in a superluminous supernova about a billion light-years aw…
For many years, astronomers have relied on distant supernovae as cosmic beacons to study the universe and test the laws of physics. But while analyzing one particular stellar explosion, Joseph Farah,… [+7899 chars]
