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Showing posts with label Paranal Observatory. Show all posts
Showing posts with label Paranal Observatory. Show all posts
Wednesday, October 2, 2024
New exoplanet discovered orbiting closest single star to our Sun -YouTube - ESO - planetary science
Using ESO's Very Large Telescope (VLT),astronomers have discovered an exoplanet orbiting the closest single star to our Sun,Barnard's star,a red dwarf variable star,at about 6 light years from Earth.The exoplanet,which has a mass at least half that of Venus,has a surface temperature of 125 C/257 F,which is too hot to sustain liquid water.It was discovered by the gravitational pull it has on Barnard's star.*The VLT is part of the Paranal Observatory on Cerro Paranal,Mt.Paranal,with an altitude of 2635 m/8645 ft.It is in the Atatcama Desert of Northern Chile.The VLT is capable of both visible and infrared observation.The VLT consists of four individual telescopes,each with a primary mirror of 8.2 m/26.9 ft in diameter.They are generally operated separately,but can also be combined.*Barnard's star has the designation V2500 Ophiuchi.It is named for the American astronomer Edward Emerson Barnard,who measured its motion in 1916.Barnard's star is not visible to the naked eye.At 7-12 billion years of age,it may be one of the most ancient stars in the Milky Way.Note:Alpha Centauri is a star system,not an individual star.*Material by ESO and edited and augmented by Andrew Taylor
Sunday, August 6, 2023
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