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Venus has a diameter of 12,103.6 km (7,520.8 mi)—only 638.4 km (396.7 mi) less than Earth's—and its mass is 81.5% of Earth's, making it the third-smallest planet in the Solar System. Conditions on the Venusian surface differ radically from those on Earth because its dense atmosphere is 96.5% carbon dioxide, with most of the remaining 3.5% ...
The surface of Venus is comparatively flat. When 93% of the topography was mapped by Pioneer Venus Orbiter, scientists found that the total distance from the lowest point to the highest point on the entire surface was about 13 kilometres (8.1 mi), about the same as the vertical distance between the Earth's ocean floor and the higher summits of the Himalayas.
Outline of tessera terrain imposed on the 'GIS Map of Venus' Maxwell Montes's tessera (t) terrain seen in appearing as white in SAR image. Tesserae are regions of heavily deformed terrain, mostly located on highland areas (greater than 2 km in elevation) on Venus. This tectonic feature -or uni— is thought to be the oldest material on Venusian ...
[1] [2] The low eccentricity and comparatively small size of its orbit give Venus the least range in distance between perihelion and aphelion of the planets: 1.46 million km. The planet orbits the Sun once every 225 days [3] and travels 4.54 au (679,000,000 km; 422,000,000 mi) in doing so, [4] giving an average orbital speed of 35 km/s (78,000 ...
Venus' 1:10,000,000 map quadrangles. Name Number Latitude Longitude Ishtar Terra: I-2490 ... Diagram of Venus' 1:5,000,000 map quadrangles. Name Number Latitude
The surface conditions on Venus are more extreme than on Earth, with temperatures ranging from 453 to 473 °C and pressures of 95 bar. [3] Venus lacks water, which makes crustal rock stronger and helps preserve surface features. The features observed provide evidence for the geological processes at work.
Its mission objectives were to map the surface of Venus by using synthetic-aperture radar and to measure the planetary gravitational field. [ 2 ] The Magellan probe was the first interplanetary mission to be launched from the Space Shuttle , the first one to use the Inertial Upper Stage booster, and the first spacecraft to test aerobraking as a ...
Transits of Venus at NASA.gov; Geody Venus, a search engine for surface features; Cartographic resources. Map-a-Planet: Venus by the U.S. Geological Survey; Gazetteer of Planetary Nomenclature: Venus by the International Astronomical Union; Venus crater database by the Lunar and Planetary Institute; Map of Venus by Eötvös Loránd University