collide with


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Within auroral ovals, some 100 to 1,000 km (62 to 620 mi) over our heads, high-energy electrons from solar plasma collide with air molecules in Earth's upper atmosphere.
Gamma rays that collide with lower-energy radiation sometimes vanish, leaving pairs of electrons and positrons in their wake.
If the cosmic rays revved up by the black hole were to collide with intense radiation from an active quasar, their energy would be drained away.
Neutrinos entering the detector collide with water molecules, generating light patterns that are monitored by the 11,000 photomultiplier tubes in the cylinder's wall.
According to one theory, some massive, dark-matter particles occasionally collide with each other and either generate gamma rays or produce particles that decay into gamma rays.
One near-Earth asteroid more than 1 kilometer across may collide with the sun every 100,000 years or so, report Paolo Farinella of the University of Pisa in Italy and his colleagues in the Sept.
Higher-energy neutrinos from outside the solar system, however, occasionally do collide with atoms inside the planet.
Like the energetic electrons before them, these exiting particies collide with atoms in the chromosphere, creating a faint glow of gamma rays that can last for hours after the main flare peters out.