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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.

American astronaut Alan Shepard dies

He was the second man in space (after Yuri Gagarin). In 1961 he made a 15-minute suborbital jump aboard spaceship Freedom 7. After the Mercury program he was grounded because of an inner ear disease. But he returned to active duty and participated on Apollo programme. In 1971 Shepard landed on the Moon with Apollo 14. He tried to play golf on the lunar surface.

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.

Canadian-American chemist Rudolph A. Marcus is born

He invented a theory which explains the rate at which an electron can move or jump from one chemical species (called the electron donor) to another (called the electron acceptor). The theory now bears his name. It is used to make predictions in many diverse phenomena like photosynthesis, cell metabolism, chemiluminescence, conductivity of polymers, corrosion, and more.

Anniversaries of famous