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13.8 Billion Years Ago
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13.6 billion years ago or 200 million years after the big bang.
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Third Threshold of increasing complexity.
200 million years after the Big Bang or 13.6 billion years ago. -
Almost 1 Billion years after the formation of the Earth, the first life organisms started to form, (generally microscopic organism) 3.77 bilion years ago.
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The first intelligent life forms appear that are the main ancestors of humans that formed 6 million years ago or 3100 BCE
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Rene Descartes was a French philosopher, mathematician, and scientist.
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Eratosthenes of Cyrene was a Greek mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the Library of Alexandria.
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One of the earliest scientists in the scientific revolution that came up with the geocentric theory.
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Discovered the Heliocentric view.
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Tycho Brahe was a Danish nobleman, astronomer, and writer known for his astronomical observations.
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Bacon was an english philosopher and statesman who served as Attorney General and as Lord Chancellor of England. His works are credited with developing the scientific method and remained influential through the scientific revolution. Bacon also played a major role in emperialism
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One of the most well known scientists who agreed with the Heliocentric theory and discovered some of Jupiter's and Saturn's moons.
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Johannes Kepler was a German astronomer, mathematician, and astrologer. He was best known for his laws of planetary motion, and his books Astronomia nova, Harmonices Mundi, and Epitome Astronomiae Copernicanae.
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John Locke was an English philosopher and physician, best known as one of the most influential of Enlightenment thinkers.
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One of the most historical physicists, who created the famous laws of motion, which are still used in the modern day.
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Leavitt discovered how to date back stars using light.
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Alfred Lothar Wegener was a famous German polar researcher, geophysicist and meteorologist. He was primarily known for his achievements in meteorology and as a pioneer of polar research.
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Best known for his discovery of the periodic table.
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Discovered that our universe is expanding.
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Harry Hammond Hess was a geologist and a United States Navy officer who used sonar detection in submarines. Considered one of the "founding fathers" of the unifying theory of plate tectonics.
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Today.