supernova remnant

noun

, Astronomy.

1. an expanding shell of gas, with accompanying strong radio and x-ray emissions, produced by a supernova.

Example Sentences

Both gamma rays appear to have originated from the Crab Nebula, a sign that the famous supernova remnant harbors the most powerful electron accelerator yet identified.

From Popular-Science

A cloud of expanding gas in space is the largest supernova remnant ever seen in the sky, a new study confirms.

From Science News

He notes that the team detected red light from sulfur atoms that are missing one electron, a hallmark of shocks in supernova remnants.

From Science News

“The evidence for it being shocks in a supernova remnant seems to be very good,” says Roger Chevalier, an astronomer at the University of Virginia in Charlottesville not involved with the new work.

From Science News

So the astronomers studied the cloud at visible and ultraviolet wavelengths, which demonstrate that the Antlia object is indeed a supernova remnant.

From Science News