Tag: antihydrogen

• What goes up, must come down…except maybe antimatter

  Gravity is a universally attractive force, at least as far as we can tell. However, some physicists have posited that antimatter behaves the opposite way, as though they have negative mass. Testing that hypothesis is remarkably hard, though: antimatter particles annihilate with their regular matter partners if they encounter each other (at low speeds at…

  Matthew R. Francis

  April 30, 2013

  Ars Technica, Writing for Other Sites

  antihydrogen, antimatter, equivalence principle