[ RadSafe ] Incredible Speeds? What Would Einstein Say?

[bobcherry at cox.net]

Quote in Scientific American story on recent huge explosion on the other side of the Milky Way: "Telescopes around the world recorded the brightest explosion ever detected in our galaxy, which sent x-rays and gamma rays careening outward at incredible speeds, astronomers announced on Friday."

Anyone want to venture a guess on what the "incredible speeds" (sic) of those gamma rays and x rays might have been? (Not to mention the visible light and radio waves also emitted.)

Bob C