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This is the first time the atmosphere of a super-Earth exoplanet was analyzed successfully. [31] [32] In November 2017, it was announced that infrared observations with the Spitzer Space Telescope indicated the presence of a global lava ocean obscured by an atmosphere with a pressure of about 1.4 bar, slightly thicker than that of Earth.
Motion interpolation of seven images of the HR 8799 system taken from the W. M. Keck Observatory over seven years, featuring four exoplanets. This is a list of extrasolar planets that have been directly observed, sorted by observed separations.
In very small minerals, surface energy is important and diamonds are more stable than graphite because the diamond structure is more compact. The crossover in stability is at between 1 and 5 nm. At even smaller sizes, a variety of other forms of carbon such as fullerenes can be found, as well as diamond cores wrapped in fullerenes. [3]
PSR J1719−1438 b is an extrasolar planet that was discovered on August 25, 2011, in orbit around PSR J1719−1438, a millisecond pulsar.The pulsar planet is most likely composed largely of crystalline carbon but with a density far greater than diamond.
First exoplanet discovered orbiting a main-sequence star 2015 NameExoWorlds Galileo: Italian astronomer: 55 Cancri A (Copernicus) 0.8306 14.65152 0.115227 radial vel. 1996 40.9 0.91 5196 2015 NameExoWorlds Brahe: Danish astronomer: 0.1714 44.4175 0.241376 radial vel. 2004 2015 NameExoWorlds Lipperhey: Dutch lensmaker: 3.878 4825 5.503 radial ...
In September 2014, NASA reported that HAT-P-11b is the first Neptune-sized exoplanet known to have a relatively cloud-free atmosphere and, as well, the first time molecules of any kind have been found, specifically water vapor, on such a relatively small exoplanet. [74] The presence of molecular oxygen (O
List of exoplanet firsts; List of exoplanets discovered by the Kepler space telescope; List of exoplanets observed during Kepler's K2 mission; List of extrasolar candidates for liquid water; List of hottest exoplanets; List of coolest exoplanets; List of multiplanetary systems; List of nearest exoplanets; List of nearest terrestrial exoplanet ...
The first report of an exoplanet within this range was in 1998 for a planet orbiting around Gliese 876 (15.3 light-years (ly) away), and the latest as of 2024 is one around Struve 2398 A (11.5 ly). The closest exoplanets are those found orbiting the star closest to the Solar System, which is Proxima Centauri 4.25 light-years away.