Proton
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The proton is a subatomic particle, a type of hadron and baryon. Together with neutrons and electrons, protons make up atoms.

The hydrogen atom consisted of an electron circling a proton. ()

Cosmic strings were no wider than a proton, but had gravitational fields as powerful as a black hole. ()

Protons were found in the Denorios belt that were emitted by the Bajoran wormhole. ()

In 2372, the crew of  found themselves being bombarded by protons after Q reduced them and their ship to subatomic proportions in an attempt to escape from Q. Captain Janeway suggested releasing a positive ion charge to repel the protons, but the crew and ship were transported from that location before the attempt was made. ()

A set of binary pulsars encountered by Voyager in 2374 emitted random proton bursts, which Ensign Harry Kim believed might pose a hazard to the ship's shields. ()

See also 
 Antiproton
 Proton burst procedure
 Proton count
 Proton weapon

External link 
 

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Particles