Tag: Exoplanets

Feb 23 2017

Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1 – Nature Research

Archiviato sotto Esobiologia, Fisica stellare, Nane rosse, Pianeti extrasolari, Planetologia, Ricerca astronomica

One aim of modern astronomy is to detect temperate, Earth-like exoplanets that are well suited for atmospheric characterization. Recently, three Earth-sized planets were detected that transit (that is, pass in front of) a star with a mass just eight per cent that of the Sun, located 12 parsecs away1. The transiting configuration of these planets, …

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atmospheric properties, Earth-like exoplanets, exoplanet's atmospheres, Exoplanets, Habitable belt, habitable environments, Habitable exoplanets, Habitable zone, Jupiter-like size dwarf star, liquid water, Nature, orbital periods 1.51 2.42 4.04 6.06 9.1 and 12.35 days), planetary sistems around at red dwarfs, red dwarf, results of a photometric monitoring campaign, seven planets with sizes and masses similar to those of Earth, Seven temperate terrestrial planets, TRAPPIST, TRAPPIST-1, ultra-cool dwarf, ultracool dwarf star

Feb 23 2017

Exoplanet Exploration: Planets Beyond our Solar System: NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star

Archiviato sotto Esobiologia, Fisica stellare, Nane rosse, Pianeti extrasolari, Planetologia

NASA’s Spitzer Space Telescope has revealed a new exoplanet discovery: the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water. Sorgente: Exoplanet Exploration: Planets Beyond …

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40 light-years, All seven of the TRAPPIST-1 planetary orbits are closer to their host star than Mercury is to our sun, Aquarius, Belgium, density, Earth-size worlds, ESO VLT, estimates of the masses, European Southern Observatory's Very Large Telescope, exoplanet's atmospheres, Exoplanets, Habitable belt, habitable environments, Habitable exoplanets, Habitable zone, HAWK-I, HST, James Webb Space Telescope, liquid water, liquid water–key to life, Liverpool telescopes, Michaël Gillon, NASA, NASA's Spitzer Space Telescope, Nature, photometric monitoring, planetary sistems around at red dwarfs, planets orbiting very close to star, red dwarf, rocky planets, seven Earth-size planets, snowball-like, South African Astronomical Observatory, tidally locked, Transit method, TRAnsiting Planets and PlanetesImals Small Telescopele, TRAPPIST Telescope in Chile, TRAPPIST-1, Trappist-1d, TRAPPIST-North, TRAPPIST-South, UKIRT, ultra-cool dwarf, University of Liege, VLT, VLT/HAWK-I, William Herschel Telescope

Feb 26 2016

Eying exomoons in the search for E.T. >> SETI

Archiviato sotto Pianeti extrasolari

When I was young, the only planets we knew about were the ones in our own solar system. Astronomers presumed that many of the other stars in the night sky had planets too, but this was sheer speculation. We could never know for sure, the thinking went, because such planets were ridiculously small and faint. …

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