๐Ÿชintro to astronomy review

key term - Antimatter

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Definition

Antimatter is a type of matter composed of antiparticles, which have the same mass as particles of ordinary matter but opposite charges. When antimatter and matter meet, they annihilate each other, releasing energy.

5 Must Know Facts For Your Next Test

  1. Antimatter particles have opposite electric charges compared to their corresponding matter particles.
  2. The collision between matter and antimatter results in annihilation, converting their mass into energy according to E=mcยฒ.
  3. Antimatter was first predicted by Paul Dirac in 1928 and the positron, an antielectron, was discovered in 1932 by Carl Anderson.
  4. In the early universe after the Big Bang, nearly equal amounts of matter and antimatter were created.
  5. The scarcity of naturally occurring antimatter in the universe remains one of the unsolved questions in cosmology.

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