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13 Strabo publishes his view on the shape of the Earth.
600 The population of the Earth rises to about 208 million people.
827 Chalid Ben Abdulmelik and Ali Ben Isa measure the size of the Earth.
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1736 A French expedition led by Pierre Louis Maupertuis is sent by King Louis XV to Lapland to measure the length of a degree of the meridian, and proves that the Earth is flattened at the poles
1769 James Cook arrives in Tahiti on the ship HM Bark ''Endeavour'', preparing to observe the solar eclipse of the planet Venus, which took place on June 3rd. After the voyage, the data was found to be inaccurate in determining the distance between the Sun and Earth.
1770 Comet Lexell (D/1770 L1) passes the Earth.
1835 ''De revolutionibus orbium coelestium'', Copernicus' book on the motion of the Earth, is removed from the Index of Prohibited Books.
1900 Dr Henry A. Rowland of John Hopkins University discovers the cause of the Earth's magnetism
1906 Richard Oldham argues that the Earth has a molten interior
1910 The earth passes through the tail of Comet Halley.
1946 Project Diana bounces Radar waves off the moon, measuring the exact distance between the earth and the moon and proving that the communication was possible between the earth and outerspace, effectively opening the space age.
1958 During the International Geophysical Year, Earth's magnetosphere is discovered
1959 Explorer VI sends the first picture of Earth from spa
1960 May 10 — The nuclear submarine USS ''Nautilus'' completes the first underwater circumnavigation of the Earth.
1960 May 15 — Sputnik 4 is launched into Earth orbit.
1962 Mercury program: While aboard ''Friendship 7'', John Glenn orbits the Earth 3 times in 4 hours, 55 minutes, becoming the first American to orbit the Earth.
1962 Scott Carpenter orbits the Earth three times in the ''Aurora 7'' space capsule.
1964 John Glenn, the first American to orbit the earth, resigns from the space program and announces the next day that he will seek the Democratic nomination for U.S. Senator from Ohio.
1968 U.S. spacecraft ''Apollo 8'' enters orbit around the Moon. Astronauts Frank Borman, Jim Lovell and William A. Anders become the first humans to see the far side of the Moon and planet Earth as a whole. The crew also reads from Genesis.
1969 Apollo program: ''Apollo 9'' returns safely to Earth after testing the Lunar Module.
1969 Apollo program: ''Apollo 10'' returns to Earth, after a successful 8-day test of all the components needed for the upcoming first manned Moon landing.
1971 Apollo program: ''Apollo 14'' returns to Earth after the third manned Moon landing.
1971 ''Apollo 15'' returns to Earth.
1972 Apollo program: ''Apollo 17'' returns to Earth, concluding the program of lunar exploration.
1974 After 84 days in space, the crew of the American space station Skylab returns to Earth.
1979 NASA's first orbiting space station Skylab begins its return to Earth, after being in orbit for six years and two months.
1980 Voyager program: The NASA space probe ''Voyager I'' makes its closest approach to Saturn, when it flies within 77,000 miles of the planet's cloud-tops and sends the first high resolution images of the world back to scientists on Earth.
1989 A 300 m (1,000 ft) diameter Near-Earth asteroid misses the Earth by 500,000 km (400,000 miles).
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1998 John Glenn returns to Earth aboard the Space Shuttle ''Discovery''.
1999 Bertrand Piccard and Brian Jones become the first to circumnavigate the Earth in a hot air balloon.
2000 Millennium celebrations take place throughout the world, even though, provided you do not count 0 as a year, the new millennium did not technically begin until January 1, 2001. Y2K passes without the serious, widespread computer failures and malfunctions that many in the news media had predicted.
2004 The European Space Agency probe, Smart 1, passes from orbit of the Earth into orbit of the Moon.
2005 Around 59 people are killed and 200 injured in a fire at a mosque in Tehran, Iran.
is intended to cut global emissions of greenhouse gases.]]
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