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Tau neutrino particle is discovered

As of 2018, it is the second most recent elementary particle to the Standard Model of particle physics (the most recent is the long sought Higgs boson). The existence of Tau neutrino was first postulated in 1977. Yet, the physicists have to wait long twenty-three years for its confirmation. It was discovered in Fermilab, near Chicago.

Neil Armstrong and Buzz Aldrin walk on the Moon

Armstrong left the lunar module first at 02:56:15 UTC. Aldrin joined him 20 minutes later. They spent about two and quarter hours outside the spacecraft, and collected 21.5 kg of lunar material to bring back to Earth. Third member of the Apollo 11 crew, Michael Collins, piloted the command module alone in the lunar orbit.

Anniversaries of the (in)famous