55 Cancri e, formellement 55 Cancri Ae, également appelée Rho 1 Cancri (A)e, HD 75732 (A)e ou encore Janssen depuis décembre 2015, est une planète extrasolaire (exoplanète) en orbite autour de l'étoile 55 Cancri A, une naine jaune située à une distance d'environ 40 années-lumière du Soleil, dans la constellation zodiacale du Cancer. There are a ton of good reasons as outlined in other answers, but one that most seemed to miss is that diamonds are virtually worthless. 55 Cancri e (abbreviated 55 Cnc e), also named Janssen, is an exoplanet closely orbiting its Sun-like host star 55 Cancri A. May 8, 2012. Et pour cause, de récentes études révèlent une importante différence de températures entre les faces « nocturne » et « diurne » de l’exoplanète. Partager Tweeter. May 8, 2012. Now they have a better idea of exactly how hot. Exoplanet Exploration. PASADENA, Calif. – NASA's Spitzer Space Telescope has detected light emanating from a "super-Earth" planet beyond our solar system for the first time. An artist's concept of Earth and 55 Cancri e positioned side by side for comparison. La NASA a d’ailleurs braqué Spitzer sur la planète pendant plusieurs heures afin de l’observer plus en détails. La planète Janssen, ou 55 Cancri e, tourne autour d'une étoile appelée Copernic à seulement 41 années-lumière. NASA. Spitzer observed 55 Cancri e between June 15 and July 15, 2013, using a camera specially designed for viewing infrared light, which is invisible to human eyes. 55 Cancri e (abbreviated 55 Cnc e, formally named Janssen / ˈ dʒ æ n s ən /) is an exoplanet in the orbit of its Sun-like host star 55 Cancri A. This artist's concept depicts 55 Cancri e as it orbits its star. We can make them in industrial quantities, and those diamonds are practically dirt cheap. The mass of the exoplanet … Planet Janssen, or 55 Cancri e, orbits a star called Copernicus only 41 light years away. This plot of data from NASA's Spitzer Space Telescope reveals the light from a "super Earth" called 55 Cancri e. Image credit: NASA/JPL-Caltech/MIT › Full image and caption. We focus on 55 Cnc e, a quintessential super-Earth in a tight orbit and transiting a nearby star that is visible to the naked eye. 0. I can hear the gears in everyone’s head grinding. Scientists say the planet may be entirely covered in lava. Here are six facts about 55 Cancri e. Detection: Like most extrasolar planets found before the Kepler mission, 55 Cancri e was discovered by identifying variations in its star’s radial velocity. En direct Best of Best of du 22 au 28 août . The super-Earth exoplanet 55 Cancri e, depicted with its star in this artist's concept, likely has an atmosphere thicker than Earth's, with ingredients that could be similar to those of Earth's atmosphere, according to a 2017 study using data from NASA's Spitzer Space Telescope. 55 Cancri e's high level of temperature contributes to "supercritical" liquid state Follow-up observations with the Spitzer Space Telescope in 2012 show that this planet is weirder than expected. Accueil; Sciences; VIDEO. First-of-Its-Kind Glimpse at a Super Earth . Skip Navigation. This illustration shows one possible scenario for the hot, rocky exoplanet called 55 Cancri e, which is nearly two times as wide as Earth. We measured the sky-projected obliquity λ = 72.4 -11.5 +12.7° , indicating that the planet orbit is prograde, highly misaligned and nearly polar compared to the stellar equator. L'exoplanète "55 Cancri e" si chaude, que de la lave coulerait à sa surface La Nasa diffuse un spectaculaire time-lapse de la Terre vue de l'ISS 31/03/2016 à 10h17 Selon la Nasa, il est possible que cet écart de température soit dû au fait que l'atmosphère de la planète n'existe que du côté exposé à l'étoile. Planet Janssen, or 55 Cancri e, orbits a star called Copernicus only 41 light years away. The entire 55 Cancri system may have been highly tilted by the presence of a stellar companion. La NASA a annoncé cette semaine que les astronomes ont pu observer 55 Cancri e, une exo-planète recouverte de lave. What’s really exciting about this planet is that it is believed to be made mostly of diamond (and this is why I brought you here). Visualization of “Super Earth” 55 Cancri e Credit: NASA/JPL-Caltech. 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