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The Space Surveillance Telescope (SST) is a 3.5 m telescope that detects, tracks, and can discern small, obscure objects, in deep space with a wide field of view system. The SST mount uses an advanced servo-control technology, that makes it one of the quickest and most agile telescopes of its size.
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 ...
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)
The Hubble Space Telescope (HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned as a vital research tool and as a public relations boon for astronomy.
5 × 10 −9 meters Width of the cell membrane: 10 −8 meters — Porcine circovirus — 1.7 × 10 −8 meters Transistor gate — 2.5 × 10 −8 meters Hepatitis B virus — 4.2 × 10 −8 meters Ultraviolet light wavelength 5 × 10 −8 meters 6 × 10 −8 meters Human immunodeficiency virus (HIV) 9 × 10 −8 meters 9 × 10 −8 meters ...
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 ...
The mirror has a polished area of 26.3 m 2 (283 sq ft), of which 0.9 m 2 (9.7 sq ft) is obscured by the secondary support struts, [16] giving a total collecting area of 25.4 m 2 (273 sq ft). This is over six times larger than the collecting area of Hubble's 2.4 m (7.9 ft) diameter mirror, which has a collecting area of 4.0 m 2 (43 sq ft).