Sentences with phrase «collide at high velocities»
Observations from NASA's Chandra X-ray Observatory show that both of these nuclei — and the region of hot gas between them — have been heated by shock waves created as gas clouds collide at high velocities.
So the choices area: a) to stay hot (in other words, since heat is something like the average velocity of atoms, the N2 could just goo off in all directions athighvelocity, until they collide with something), or b) to radiate.