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11 meters – approximate width of a doubles tennis court; 15 meters – width of a standard FIBA basketball court; 15.24 meters – width of an NBA basketball court (50 feet) 18.44 meters – distance between the front of the pitcher's rubber and the rear point of home plate on a baseball field (60 feet, 6 inches) [125]
For the small outer irregular moons of Uranus, such as Sycorax, which were not discovered by the Voyager 2 flyby, even different NASA web pages, such as the National Space Science Data Center [6] and JPL Solar System Dynamics, [5] give somewhat contradictory size and albedo estimates depending on which research paper is being cited.
[25] [26] The standard FIFA football pitch for international matches is 105 m (344 ft) long by 68 m (223 ft) wide (7,140 m 2 or 0.714 ha or 1.76 acres); FIFA allows for a variance of up to 5 m (16.4 ft) in length in either direction and 7 m (23.0 ft) more or 4 m (13.1 ft) less in width (and larger departures if the pitch is not used for ...
The parsec (symbol: pc) is a unit of length used to measure the large distances to astronomical objects outside the Solar System, approximately equal to 3.26 light-years or 206,265 astronomical units (AU), i.e. 30.9 trillion kilometres (19.2 trillion miles).
Improving measurements were continually checked and cross-checked by means of improved understanding of the laws of celestial mechanics, which govern the motions of objects in space. The expected positions and distances of objects at an established time are calculated (in au) from these laws, and assembled into a collection of data called an ...
2.6 × 10 −10 meters 5 × 10 −10 meters Width of a protein alpha helix: 5 × 10 −10 meters 8 × 10 −10 meters Glucose molecule — 8 × 10 −10 meters Nanometer: 10 −9 meters 10 −9 meters Width of a carbon nanotube: 10 −9 meters 10 −9 meters Buckyball — 10 −9 meters Smallest transistor gate of a microprocessor 2 × 10 −9 ...
3–5 × 10 8: Volume of all humans alive on the planet (based on an average mass of 40–70 kg per human) 4 × 10 8: Predicted volume of natural gas required per day by India in 2025 5 × 10 8: One sydharb—volume of Sydney Harbour, Australia [6] 6.93 × 10 8: Volume of Lake Murten, Switzerland 1 × 10 ^ 9 m 3 (1.3 × 10 9 cu yd; 1.0 km 3)
Lunar semi-major axis is an important astronomical datum. The few-millimeter precision of the range measurements determines semi-major axis to a few decimeters. It has implications for testing gravitational theories such as general relativity [2] and for refining other astronomical values, such as the mass, [3] radius, [4] and rotation of Earth ...