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Flashback calendar

Scientists find oldest rock on Earth

A team of researchers led by John Valley from University of Wisconsin-Madison confirmed that zircon from Western Australia’s Jack Hills region is the oldest fragment of Earth’s crust. Using two independent dating methods they calculated the age of the mineral to be 4.4 billion years. The Earth itself is around 4.54 billion years.

First pulsar is announced

The scientific journal Nature published a report about a new star type – the pulsar. It is a magnetized, rotating neutron star or white dwarf, which emits a beam of electromagnetic radiation. It was discovered by Northern Irish astrophysicist Jocelyn Bell. Her pulsar was first called LGM-1 (short for Little Green Man), because its signal was so regular, that it seemed to be of an artificial origin.

French inventor and artist Jacques de Vaucanson is born

He was very interested in automata. He designed automatic flute and tambourine player. They were able to play twelve songs. His most famous creation is a robotic duck. It appeared to have the ability to eat kernels of grain, and to metabolize and defecate them. Jacques de Vaucanson also designed first automatic loom. But this invention was not taken up.

Anniversaries of the (in)famous

born 1955

Steve Jobs

born 1304

Ibn Battuta

born 1976

Jan Koum