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  2. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    from geostationary orbit to Earth: 119 ms: the length of Earth's equator: 134 ms: from Moon to Earth: 1.3 s: from Sun to Earth (1 AU) 8.3 min: one light-year: 1.0 year: one parsec: 3.26 years: from the nearest star to Sun (1.3 pc) 4.2 years: from the nearest galaxy to Earth: 70 000 years: across the Milky Way: 87 400 years: from the Andromeda ...

  3. Earth's rotation - Wikipedia

    en.wikipedia.org/wiki/Earth's_rotation

    Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes and 4 seconds with respect to other distant stars . Earth's rotation is slowing slightly with time; thus, a day was shorter in the past. This is due to the tidal effects the Moon has on Earth's rotation.

  4. List of circumnavigations - Wikipedia

    en.wikipedia.org/wiki/List_of_circumnavigations

    Franck Cammas and a crew of 10; 2010; French trimaran Groupama 3; set the fastest maritime circumnavigation at the time, in a time of 48 days, 7 hours 44 minutes and 52 seconds. [8] Dilip Donde (Indian Navy); 2009–2010; first Indian to carry out a solo circumnavigation; stopped in four ports – Fremantle, Lyttelton, Port Stanley and Cape ...

  5. Earth's orbit - Wikipedia

    en.wikipedia.org/wiki/Earth's_orbit

    [nb 1] Earth's orbital speed averages 29.78 km/s (19 mi/s; 107,208 km/h; 66,616 mph), which is fast enough to cover the planet's diameter in 7 minutes and the distance to the Moon in 4 hours. [3] The point towards which the Earth in its solar orbit is directed at any given instant is known as the "apex of the Earth's way".

  6. Light-second - Wikipedia

    en.wikipedia.org/wiki/Light-second

    2.998 × 10 5 km: 1.863 × 10 5 miles: Average distance from the Earth to the Moon is about 1.282 light-seconds light-minute 60 light-seconds = 1 light-minute 17 987 547 480 m: 1.799 × 10 7 km: 1.118 × 10 7 miles: Average distance from the Earth to the Sun is 8.317 light-minutes light-hour 60 light-minutes = 3600 light-seconds 1 079 252 848 ...

  7. Circumnavigation world record progression - Wikipedia

    en.wikipedia.org/wiki/Circumnavigation_world...

    23 days 15 hours 21 minutes and 3 seconds 1928 1928 [15] Hugo Eckener: 21 days, 5 hours and 31 minutes 8 August 1929 29 August 1929 First circumnavigation in an airship, aboard LZ 127 Graf Zeppelin from Lakehurst, New Jersey [16] [17] Pilot Wiley Post and navigator Harold Gatty: 8 days, 15 hours and 51 minutes 23 June 1931 1 July 1931

  8. Orders of magnitude (speed) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(speed)

    Average walking speed—below a speed of about 2 m/s, it is more efficient to walk than to run, but above that speed, it is more efficient to run. 2.39: 8.53: 5.35: 7.97 × 10 −9: World record time 50m freestyle swim 5.78: 20.81: 12.93: 1.928 × 10 −8: World record time marathon [13] 6–7: 20–25: 12–15: 1.8–2.3 × 10 −8 ...

  9. Earth's circumference - Wikipedia

    en.wikipedia.org/wiki/Earth's_circumference

    Earth's circumference is the distance around Earth. 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] Treating the Earth as a sphere, its circumference would be its single most important measurement. [2]