John Archibald Wheeler was born in Jacksonville, Fla., in 1911 to a husband-wife team of librarians. He inherited their love ...

Physicists have created the heaviest clumps of antimatter particles ever seen. Known as antihyperhydrogen-4, this strange stuff could help us solve some of the most puzzling physics mysteries.

Researchers say comparing characteristics of matter and antimatter particles generated in these particle collisions can offer clues to why that asymmetry happened. “To study the matter-antimatter ...

It is a so-called exotic atom consisting of both matter and antimatter - so very unusual stuff indeed. Matter is what the world around us is made from, including the stars, the planets and us.

Researchers have for the first time slowed down an antimatter atom using lasers to more precisely study this physical phenomena.

Antimatter is the mirror version of every particle in the universe. For the last 100 years, physicists have been wondering if it falls down or up with gravity.

The physical properties of antihydrogen – an atom composed of an antimatter electron (the positron) bound to an antimatter proton (antiproton) – are expected to be exactly the same as those of ...

Physics & Chemistry Antimatter Could Travel Through Our Galaxy With Ease, Physicists Say Collisions at CERN suggest the enigmatic antimatter particles can persevere in interstellar space.

Scientists have been studying gamma rays from pulsars to figure out how many positrons the stars release. “We’re getting numbers that match very well with models where pulsars would produce the excess ...

An experiment conducted on hybrid matter-antimatter atoms has defied researchers’ expectations.