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supernova remnant

noun

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


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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.

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

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

“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.

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

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