Gamma Ray Annihilation Lasers

No, seriously.

Di-positronium, as the new molecule is known, was predicted to exist in 1946 but has remained elusive to science.

Now, a US team has created thousands of the molecules by merging electrons with their antimatter equivalent: positrons.

The discovery, reported in the journal Nature, is a key step in the creation of ultra-powerful lasers known as gamma-ray annihilation lasers.

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