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Measured around the equator, it is 40,075.017 km (24,901.461 mi). Measured passing through the poles, the circumference is 40,007.863 km (24,859.734 mi). [1] Measurement of Earth's circumference has been important to navigation since ancient times. The first known scientific measurement and calculation was done by Eratosthenes, by comparing ...
e. Earth radius (denoted as R🜨 or ) is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid, the radius ranges from a maximum of nearly 6,378 km (3,963 mi) ( equatorial radius, denoted a) to a minimum of nearly 6,357 km (3,950 mi) ( polar radius, denoted b ).
Currently most of the objects of mass between 10 9 kg to 10 12 kg (less than 1000 teragrams (Tg)) listed here are near-Earth asteroids (NEAs). The Aten asteroid 1994 WR12 has less mass than the Great Pyramid of Giza, 5.9 × 10 9 kg. For more about very small objects in the Solar System, see meteoroid, micrometeoroid, cosmic dust, and ...
Earth orbits the Sun, making Earth the third-closest planet to the Sun and part of the inner Solar System. Earth's average orbital distance is about 150 million km (93 million mi), which is the basis for the astronomical unit (AU) and is equal to roughly 8.3 light minutes or 380 times Earth's distance to the Moon .
The following tables show the progression of world bests and world records in the 10K run, as recognised by the IAAF. The 10K run was introduced as a part of world record events in 2003. The 10K run was introduced as a part of world record events in 2003.
Time Athlete Date Place 37:11 Roman Rasskazov (RUS) 28 May 2000: Saransk, Russia 37:50 Andreas Erm (GER) 27 May 2000: Berlin, Germany 38:26.4 Daniel García (MEX) 17 May 1997: Sønder Omme, Danmark 39:07.38 Axel Noack (GDR) 10 July 1988: Neubrandenburg, Germany (former GDR) 39:36 José Marin (ESP) 6 May 1984: Bergen, Norway
NASA just announced that they've found 219 potential planets, and of those, 10 are close to the size of Earth and could possibly sustain life.
The apparent solar time is a measure of Earth's rotation and the difference between it and the mean solar time is known as the equation of time. Stellar and sidereal day On a prograde planet like Earth, the stellar day is shorter than the solar day. At time 1, the Sun and a certain distant star are both overhead.