planet 138 - To the left the planet Kepler138 uarnix dompet digital c and in the background the planet Kepler 138 b seen in silhouette transiting its central star Kepler 138 is a red dwarf star located 218 lightyears away The low density of Kepler138 c and Kepler138 d which are nearly identical in size means that they must be composed largely of water Marssize planet orbits distant star Exoplanet Exploration Two SuperEarths May Be Mostly Water NASA Science Two WaterWorlds May Orbit Nearby Red Dwarf Kepler138 Kepler138 c ScienceNASA Marssize Kepler138b Gets a Mass NASA We think of Earth of course as a water world with its surface mostly covered by oceans But these two new exoplanets Kepler138 c and Kepler138 d appear to have oceans at least 1000 Two Exoplanets May Be Mostly Water NASAs Hubble and Spitzer Artists illustration of Kepler 138 planetary system Researchers using the NASAESA Hubble Space Telescope have found evidence for the existence of a new type of planet they have called a water world where water makes up a large fraction of the entire planet These worlds discovered in a planetary system 218 lightyears away are The three Kepler138 planets shown in orange are among the four smallest exoplanets with both size and mass measurements Kepler138b is the first exoplanet smaller than Earth to have both its mass and size measured This significantly extends the range of planets with measured densities Two Exoplanets May Be Mostly Water NASAs Hubble and Spitzer Planet Method Year Reference Disposition Kepler138 Kepler138 b Transit 2014 Rowe et al 2014 Confirmed Planet Kepler138 Kepler138 c Transit 2014 Kipping et al 2014 Confirmed Planet Kepler138 Kepler138 d Transit 2014 Kipping et al 2014 Confirmed Planet Kepler138 Kepler138 e Transit Timing Variations 2022 Piaulet et al 2022 Kepler138b is the innermost of three planets that orbit Kepler138 a star less than half the size of our sun and roughly 30 percent cooler The Kepler138 system is located about 200 lightyears from Earth in the direction of the constellation Lyra The outer two planets Kepler138c and Kepler138d are approximately the size of Earth Kepler138b First Exoplanet Smaller Than Earth to Have Its Kepler138 also known as KOI314 is a red dwarf 310 located in the constellation Lyra 219 light years from Earth 1 It is located within the field of vision of the Kepler spacecraft the satellite that NASA s Kepler Mission used to detect planets transiting their stars The star hosts three confirmed planets and a likely fourth Kepler138 c is a super Earth exoplanet that orbits a Mtype star Its mass is 23 Earths it takes 138 days to complete one orbit of its star and is 00913 AU from its star Its discovery was announced in 2014 Hubble helps discover a new type of planet largely composed Twin planets orbiting a distant star may be half water This is an artists illustration showing a crosssection of the Earth left and the exoplanet Kepler138 d right Like the Earth this exoplanet has an interior composed of metals and rocks brown portion but Kepler138 d also has a thick layer of highpressure water in various forms supercritical and potentially top slot 138 liquid water deep inside the planet and an extended water vapor envelope Kepler138b is the innermost of three planets that orbit Kepler138 a star less than half the size of our sun and roughly 30 percent cooler The Kepler138 system is located about 200 lightyears from Earth in the direction of the constellation Lyra The outer two planets Kepler138c and Kepler138d are approximately the size of Earth The mass of the Marssized exoplanet Kepler138 b from In fact the inner two planets around Kepler138 are both rocky superEarths But for that third planet the reality is quite different Kepler138d isnt dense enough to be a rocky terrestrial planet Kepler138 is an Mdwarf star approximately 218 lightyears away in the constellation of Lyra Also known as KOI304 or TIC 159376971 the star is about 57 the mass and 54 the radius of the Sun Kepler138 is home to at least three exoplanets Kepler138b Kepler138c and Kepler138d We previously thought that planets that were a bit 2 alien water worlds with oceans 500 times deeper than Earths A pair of twin planets called Kepler138 c and d appear to be water worlds with steamy atmospheres and oceans that take up half their total volume Two strange planets 218 light years away may be The innermost Marssized planet Kepler 138 b has a mass of about 0066 times that of the Earth and is the smallest exoplanet to have its density measured The middle and outer planets Kepler At the time there were three known planets in the system named Kepler138 b c and d and researchers started making more observations of the planets using the Hubble and Spitzer space telescopes In addition to finding a fourth planet in the system Kepler138e the research team found something else surprising Kepler138c and d are The closerin planet Kepler138 b on the other hand is confirmed to be a small Marsmass planet one of the smallest exoplanets known to date As our instruments and techniques become sensitive enough to find and study planets that are farther from their stars we might start finding a lot more of these water worlds Benneke concluded Kepler138 Wikipedia The closerin planet Kepler138b on the other hand is confirmed to be a small Marsmass planet one of the smallest exoplanets known to date As our instruments and techniques become sensitive enough to find and study planets that are farther from their stars we might start finding a lot more of these water worlds Benneke concluded ESA Artists illustration of Kepler 138 planetary system These two planets are made of water study says CNN Sciencelines Guide to the Exoplanets The Gas Miniature Potential Water Worlds in Kepler138 System AMNH The Kepler138 system is comprised of four confirmed exoplanets three of which were discovered by NASAs nowretired Kepler Space Telescope in 2014 while the fourth was detected in data from In this illustration exoplanet Kepler138 d is in the foreground and Kepler138 c is on the left The low densities of Kepler138 c and Kepler138 d indicate that they must be composed largely of With Hubble and Spitzer researchers discover waterfilled nice win88 slot Kepler138 NASA Exoplanet Archive
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