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26.3 cm = 2.6 dm – length of average male human foot; 29.98 cm = 2.998 dm – distance light in vacuum travels in one nanosecond; 30 cm = 3.0 dm – maximum leg length of a Goliath birdeater; 31 cm = 3.1 dm – wingspan of largest butterfly species Ornithoptera alexandrae; 32 cm – length of the Goliath frog, the world's largest frog
Earth radius R 🜨 ≈ 6,371 km [9] Lunar distance LD ≈ 384 402 km. [10] Average distance between the center of Earth and the center of the Moon. astronomical unit au. Defined as 149 597 870 700 m. [11] Approximately the distance between the Earth and Sun. light-year ly ≈ 9 460 730 472 580.8 km.
From 1630 to 1718 a millia was 5,564 feet (1,696 metres), making a geographical league of four millias equal 22,256 feet (6,784 m or 3.663 modern nautical miles). But from 1718 through the 1830s the millia was defined as the equivalent of just over 5,210 feet, giving a shorter geographical league of just over 20,842 feet (6,353 m or 3.430 ...
Kincheloe flew 2000 miles per hour (3,200 km/h) at 126,000 feet (38,500 m), or 24 miles up. At this altitude and speed, aerodynamic lift still carries 98 percent of the weight of the plane, and only two percent is carried by inertia, or Kepler force , as space scientists call it.
Kos may also refer to roughly 1.8 kilometres (1.1 mi) [6] Arthashastra standard unit of kos or krosha is equal to 3075 metres in SI units and 1.91 miles in imperial units. [ 7 ] [ dubious – discuss ]
The impact crater is more than 5 miles (8 kilometers) deep. Scientists hope that returning samples to Earth will help answer enduring questions about the intriguing far side, which hasn’t been ...
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[citation needed] Thus Posidonius's measure of 240,000 stadia translates to 24,000 mi (39,000 km), not much short of the actual circumference of 24,901 mi (40,074 km). [15] Strabo noted that the distance between Rhodes and Alexandria is 3,750 stadia, and reported Posidonius's estimate of the Earth's circumference to be 180,000 stadia or 18,000 ...