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It discovered that the atmosphere of Venus was 95% carbon dioxide (CO 2), ... 1990, the American Magellan probe, named after the explorer Ferdinand Magellan, ...
In 2007, Venus Express discovered that a huge double atmospheric polar vortex exists at the south pole. [136] [137] Venus Express discovered, in 2011, that an ozone layer exists high in the atmosphere of Venus. [138]
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
In 1992, the first evidence of a planetary system other than our own was discovered, orbiting the pulsar PSR B1257+12. Three years later, 51 Pegasi b, the first extrasolar planet around a Sunlike star, was discovered. NASA announced in March 2022 that the number of discovered exoplanets reached 5,000, of several types and sizes. [45]
No vulcanoids, asteroids between the orbit of Mercury and the Sun, have been discovered. [132] [133] As of 2024, one asteroid has been discovered to orbit completely within Venus's orbit, 594913 ꞌAylóꞌchaxnim. [134] Venus-crossing asteroids are those that cross the orbit of Venus. There are 2,809 as of 2015.
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Missions to Venus constitute part of the exploration of Venus. The Soviet Union , followed by the United States , have soft landed probes on the surface. Venera 7 was the first lander overall and first for the Soviet Union, touching down on 15 December 1970.
Venus, our closest planetary neighbor, is sometimes called Earth's twin based on their similar size and rocky composition. While its surface is baked and barren today, might Venus once also have ...