There is an exoplanet, 33 light years from USA. which is completely covered in burning ice.
Exoplanet is a planet outside our solar system that is moving around a star. There are some “rogue” exoplanets, which are not attached to any star system. The first exoplanet was noticed by the astronaut as early as 1917, but was not recognized as such. Even NASA was not confirmed until the 1990s.
Astrophysicist Jaymie Matthewswas of University of British Columbia and his team discovered a Jupiter-size planet around Gamma Cephei in 1988, but its orbit was so smaller than Jupiter’s, the scientists did not claim it as a planet. Then they discovered a another planet called PSR 1257+12, in 1992. The first confirmed exoplanet, 51 Pegasi b, was discovered in 1995 by Michael Mayor and Didier Queloz. Its mass was about half of Jupiter, it orbits around its star was like the distance of Mercury from the Sun. 51 Pegasi b is so close to its star that it is likely tidally locked, meaning one side always faces the star. They announced two more exoplanets, 70 Virginis and 47 Ursae Majoris, in 1996. The first one completes its orbit in 116 days and the second one in 2.5 years.
The Butler and Marcy team discover at least 70 of the first 100 exoplanets of the decade.
The closest exoplanet of our earth is Proxima b, which is four light-years away and moving around the star Proxima Centauri, our nearest star which was discovered last year. The second closer exoplanet is a Earth-sized planet Ross 128 b was found by ESO’s
High-Accuracy Radial-Velocity Planet Searcher (HARPS).
NASA’s has launched Kepler Space Telescope in 2009. And it is the start of “modern” era of planet hunting. There are more than 1,000 confirmed exoplanets discovered by this telescope: the Kepler space telescope, which reached orbit in 2009 and searching planets for four years. Kepler uses a technique called the “transit” method, measuring how much a star's light dims when a planet passes in front of it. The result: more than 2,000 confirmed exoplanets were sifted from the data, the bulk of the more than 3,300 confirmed so far, with more than 2,400 planetary candidates as scientists continue to mine Kepler’s observations.
The Kepler mission was introduced by William Borucki, a scientist of the NASA Ames Research Center in Moffet Field, California in the 1990s. But NASA rejected his mission designs four times, finally won approval in 2001.
After completing Kepler mission scientists are still working for discoveries, and there are more to come. There are some projects by NASA like MOST is still operating, and the NASA TESS (Transiting Exoplanet Survey Satellite), Swiss CHEOPS (Characterizing ExOPlanets Satellite) and ESA’s PLATO missions are waiting for operation.
A 3.6-meter telescope La Silla in Chile is leading the Doppler wobble mission, the another mission working on exoplanet.
According to NASA there are 3449 confirmed exoplanets from among 4,669 candidates in 2,577 solar systems . Among the confirmed exoplanet there are 1,264 Ice Giants which is composed mainly of elements such as oxygen, carbon, nitrogen, and sulfur, 1,043 Gas Giants which is composed of gases such as hydrogen and helium, 781 Super-earths which is larger than Earth, but smaller than Uranus or Neptune, 348 terrestrial exoplanets which is rocky planets, composed of silicate rocks or metals and 13 are yet to be classified.
Exoplanet is a planet outside our solar system that is moving around a star. There are some “rogue” exoplanets, which are not attached to any star system. The first exoplanet was noticed by the astronaut as early as 1917, but was not recognized as such. Even NASA was not confirmed until the 1990s.
Astrophysicist Jaymie Matthewswas of University of British Columbia and his team discovered a Jupiter-size planet around Gamma Cephei in 1988, but its orbit was so smaller than Jupiter’s, the scientists did not claim it as a planet. Then they discovered a another planet called PSR 1257+12, in 1992. The first confirmed exoplanet, 51 Pegasi b, was discovered in 1995 by Michael Mayor and Didier Queloz. Its mass was about half of Jupiter, it orbits around its star was like the distance of Mercury from the Sun. 51 Pegasi b is so close to its star that it is likely tidally locked, meaning one side always faces the star. They announced two more exoplanets, 70 Virginis and 47 Ursae Majoris, in 1996. The first one completes its orbit in 116 days and the second one in 2.5 years.
The Butler and Marcy team discover at least 70 of the first 100 exoplanets of the decade.
The closest exoplanet of our earth is Proxima b, which is four light-years away and moving around the star Proxima Centauri, our nearest star which was discovered last year. The second closer exoplanet is a Earth-sized planet Ross 128 b was found by ESO’s
High-Accuracy Radial-Velocity Planet Searcher (HARPS).
NASA’s has launched Kepler Space Telescope in 2009. And it is the start of “modern” era of planet hunting. There are more than 1,000 confirmed exoplanets discovered by this telescope: the Kepler space telescope, which reached orbit in 2009 and searching planets for four years. Kepler uses a technique called the “transit” method, measuring how much a star's light dims when a planet passes in front of it. The result: more than 2,000 confirmed exoplanets were sifted from the data, the bulk of the more than 3,300 confirmed so far, with more than 2,400 planetary candidates as scientists continue to mine Kepler’s observations.
The Kepler mission was introduced by William Borucki, a scientist of the NASA Ames Research Center in Moffet Field, California in the 1990s. But NASA rejected his mission designs four times, finally won approval in 2001.
After completing Kepler mission scientists are still working for discoveries, and there are more to come. There are some projects by NASA like MOST is still operating, and the NASA TESS (Transiting Exoplanet Survey Satellite), Swiss CHEOPS (Characterizing ExOPlanets Satellite) and ESA’s PLATO missions are waiting for operation.
A 3.6-meter telescope La Silla in Chile is leading the Doppler wobble mission, the another mission working on exoplanet.
According to NASA there are 3449 confirmed exoplanets from among 4,669 candidates in 2,577 solar systems . Among the confirmed exoplanet there are 1,264 Ice Giants which is composed mainly of elements such as oxygen, carbon, nitrogen, and sulfur, 1,043 Gas Giants which is composed of gases such as hydrogen and helium, 781 Super-earths which is larger than Earth, but smaller than Uranus or Neptune, 348 terrestrial exoplanets which is rocky planets, composed of silicate rocks or metals and 13 are yet to be classified.
In May 2016 astronaut found three planets orbiting the star TRAPPIST-1.
The search for exoplanets is also the search for alien life and habitable spaces beyond our solar system.
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