The story of antimatter

30 June 1905
Albert Einstein publishes his theory of Special Relativity

On 30 June 1905 the German physics journal…
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17 April 1912
Victor Hess discovers cosmic rays

In 1911 and 1912 Austrian physicist Victor Hess…
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27 January 1926
Erwin Schrödinger and Werner Heisenberg devise a quantum theory

In the 1920s, physicists were trying to apply…
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02 January 1928
Dirac's equation predicts antiparticles

In 1928, British physicist Paul Dirac wrote down…
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09 September 1932
Carl Anderson discovers the positron

In 1932 Carl Anderson, a young professor at the…
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20 February 1934
Ernest Lawrence patents the cyclotron

In 1929 Ernest Lawrence – then associate…
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01 April 1954
The Bevatron starts up at Berkeley, California

The Bevatron in 1958 (Image: Lawrence Berkeley…
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01 November 1955
The Bevatron discovers the antiproton

A paper titled "Observation of antiprotons," by…
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03 October 1956
The Bevatron discovers the antineutron

The journal Physical Review receives the paper…
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27 July 1964
Cronin and Fitch detect a difference between matter and antimatter

In 1964, James Cronin and Val Fitch at Brookhaven…
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01 September 1965
First observations of antinuclei

By 1965, all three particles that make up atoms (…
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18 August 1978
First storage of antiprotons

CERN issues a press release announcing the first…
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04 April 1981
First proton-antiproton collisions

The Intersecting Storage Rings produced the world…
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15 September 1995
First antiatoms produced: antihydrogen, at CERN

A team led by Walter Oelert created atoms of…
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07 February 1997
Antiproton Decelerator approved

In 1996 CERN's antiproton machines – the…
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18 September 2002
ATHENA and ATRAP create "cold" antimatter

Two CERN experiments, ATHENA and ATRAP, created…
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05 June 2011
ALPHA traps antimatter atoms for 1000 seconds

The ALPHA experiment at CERN reported today that…
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28 July 2011
ASACUSA weighs antimatter to one part in a billion

In a paper published today in the journal Nature…
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28 September 2011
CERN sets course for extra-low-energy antiprotons

The kick-off meeting for ELENA, the Extra Low…
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25 March 2013
ATRAP experiment makes world’s most precise measurement of antiproton magnetic moment

In Physical Review Letters, the Antihydrogen TRAP…
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23 April 2013
LHCb experiment observes new matter-antimatter difference

The LHCb collaboration at CERN publishes a paper…
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30 April 2013
ALPHA first direct analysis on how antimatter is affected by gravity

The ALPHA collaboration at CERN1 has published a…
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03 June 2014
CERN’s ALPHA experiment measures charge of antihydrogen

In a paper published in the journal Nature…
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A cut-away schematic of the Penning trap system used by BASE. The experiment receives antiprotons from CERN's AD; negative hydrogen ions are formed during injection into the apparatus. (Image: CERN)

12 August 2015
The BASE experiment at CERN compares protons and antiprotons with high precision

Geneva, 12 August 2015. In a paper published…
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The ASACUSA experiment (Image: CERN) (Image: CERN)

03 November 2016
ASACUSA experiment improves precision of antiproton mass measurement with new innovative cooling…

The ASACUSA experiment at CERN reports in Science…
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Alpha Experiment (Image: CERN)

19 December 2016
ALPHA experiment observes the light spectrum of antimatter for the first time

The ALPHA collaboration reports in Nature the…
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Stefan Ulmer - Spokeperson of BASE experiment (Image: CERN)

18 October 2017
The BASE experiment breaks its own precision measurement record of antiproton’s magnetic moment

The BASE collaboration, publishes today in Nature…
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A CP-symmetry transformation swaps a particle with the mirror image of its antiparticle. (Image: CERN)

21 March 2019
LHCb sees a new flavour of matter–antimatter asymmetry

The LHCb collaboration at CERN has seen, for the…
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The Alpha Experiment at CERN (Image: CERN)

31 March 2021
ALPHA cools antimatter using laser light for the first time

The ALPHA collaboration at CERN has succeeded in…
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