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172 years ago #Today, the rotation of the Earth was experimentally proved by Leon Foucault. After weeks of work, he recorded in his journal that he made this discovery at 2:00 am working with a pendulum in the cellar of the house he shared with his mother buff.ly/2MEJlUM
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In Northern Hemisphere we're right in the middle of winter, but Earth is actually at its closest position to the Sun #Today at 16:17 UTC and we're 5 million km closer to the Sun now than we are in early July
[read more: buff.ly/3qTubLl]
#HappyPerihelion
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14 years ago #Today, the Bitcoin genesis block was created
[read more: buff.ly/3QdtglO]
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Born 103 years ago #Today, Isaac Asimov was professor of biochemistry, science popularizer and extraordinary sci-fi writer: he wrote more than 500 books and an estimated 90,000 letters and postcards buff.ly/2LgN6Pf [portrait by Rowena Morrill: buff.ly/3n85rf1]
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Born #Today in 1894, Satyendra Nath Bose was mathematician and physicist. He's best known for his collaboration with Albert Einstein in developing the foundation for Bose–Einstein statistics and the theory of the Bose–Einstein condensate buff.ly/2kaI0qZ
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#Today is the 222nd anniversary of the discovery of Ceres, the first asteroid found in 1801: the number of observed asteroids in the inner and outer Solar System is now beyond one million bit.ly/1VqmQf1
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92 years ago #Today, the first photograph showing the curvature of the Earth was exhibited in Cleveland, Ohio
[read more: ow.ly/ajQe30n8x39]
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22 years ago #Today, while en route to Saturn, @CassiniSaturn made its closest approach to Jupiter. This view of Io against the gas giant's clouds was sent to Earth two days later go.nasa.gov/2ixxp3D
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#Today in 1924 (still less than 100 years ago), Edwin Hubble announced to the world the existence of other galaxies than the Milky Way bit.ly/2ikVc74
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This is the first acknowledged picture of M31 or the Andromeda Galaxy, taken exactly 134 years ago #Today by engineer and amateur astronomer Isaac Roberts bit.ly/2hs77xX
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95 years ago #Today, the Krakatoa volcano began a new eruption on the seafloor along the same line as the cones of previous activity. By 26 Jan 1928, a growing cone had reached sea level and formed a small island called Anak Krakatoa (Child of Krakatoa) bit.ly/2zL0CzA
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Born #Today in 1903, John Von Neumann is generally regarded as the foremost mathematician of his time and said to be "the last representative of the great mathematicians" bit.ly/1T30Urk
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191 years ago #Today, the HMS Beagle set sail from Plymouth: Charles Darwin was 22 bit.ly/2iBI24q #science #explore
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Born 451 years ago #Today, Johannes Kepler was a key figure in the 17th century scientific revolution. He is best known for his laws of planetary motion which provided one of the foundations for Newton's theory of gravitation bit.ly/22Ujdnc [gif: ow.ly/g6dC30n741x]
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Born 200 years ago #Today, Louis Pasteur is renowned for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization. His works are credited to saving millions of lives thanks to the vaccines for rabies and anthrax buff.ly/2QePXbq
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Television viewers saw this picture of Earth during the sixth live telecast from the Apollo 8 spacecraft on its way home, 54 years ago #Today go.nasa.gov/2i0atfC
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124 years ago #Today, Marie Skłodowska Curie discovered the radioactive element radium while experimenting with pitchblende, a common uranium ore bit.ly/2C7cnFJ
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Born 231 years ago #Today, Charles Babbage was a polymath, a mathematician, a philosopher, an inventor and a mechanical engineer: he originated the concept of digital programmable computer bit.ly/2l0v7gk
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40 years ago #Today, The Man of the Year in Time magazine was a non-human for the first time. A computer received the honour as 1982's “greatest influence for good or evil” bit.ly/2C7YmoM
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One year ago #Today, the James Webb Space Telescope was launched
[video: buff.ly/3hLj5bj]
[art by Ben Alp, van Gogh's Starry Night with the first image from JWST: buff.ly/3vlh6xe]
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264 years ago #Today, the predicted return of comet 1P/Halley was first sighted by Johann Georg Palitzsch. Edmond Halley had predicted in 1705 the return of the comet every 75.5 years. For the first time the scientific prediction had been proven bit.ly/2C52msG
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“Nature and Nature's laws lay hid in night:
God said, Let Newton be! and all was light”
― Alexander Pope
#HappyBirthday #IsaacNewton
(born 380 years ago #Today)
[gif: buff.ly/3JrvMB4]
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54 years ago #Today, one of the most famous images ever taken was snapped from the orbit of the Moon. Now known as "Earthrise", with modern digital technology, the iconic image -- originally in black and white -- has been remastered ow.ly/Hir130n5JpX
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74 years ago #Today, the transistor was first demonstrated by Walter H. Brattain and John Bardeen to their higher-ups at Bell Laboratories. It has since become the most widely manufactured device in history bit.ly/2kNRLs3 #HappyBirthdayTransistor
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54 years ago #Today, three men were boldly going where no one had gone before. This is what Earth looked like in the Hasselblad photos taken more or less in the same hours, during the trans-lunar coast ow.ly/eCSA30n5c4p #Apollo8
