webb
Washington (AFP) - Le très puissant télescope James Webb a dévoilé les images les plus détaillées jamais prises de la nébuleuse de la Tête de cheval, l'un des objets cosmiques les plus reconnaissables, a annoncé lundi la Nasa. Ces images montrent le haut de la "crinière" du cheval, révélant pour la première fois les structures plus petites formant le bord de la nébuleuse -- un gigantesque nuage de gaz et de poussières. Située au sein de la proche constellation d'Orion, sa silhouette fait penser à une tête et une encolure de cheval, se dressant au-dessus de nuages. James Webb, bijou d'ingénieri...
AFP (Français)
Washington (AFP) - NASA's James Webb telescope has captured the most detailed infrared images ever taken of the Horsehead Nebula, one of the most majestic and recognizable objects in the night sky, the space agency said Monday. The new observations show the top of the "horse's mane," revealing for the first time the small scale structures on the edge of the giant cloud of dust and gas. Located roughly 1,300 light years away in the constellation Orion ("The Hunter"), the iconic silhouette of a horse's head and neck rises from what look like churning waves of interstellar foam. Webb, the most po...
AFP
Washington (AFP) - European astronomers using the James Webb Space Telescope have detected a previously unknown asteroid about the size of Rome's Colosseum in the main asteroid belt between Mars and Jupiter. The asteroid measuring between 300 and 650 feet (100 to 200 meters) in length is the smallest object observed to date using the telescope, the US space agency NASA said Monday. The European astronomers "serendipitously detected" the asteroid, NASA said in a statement, adding that more observations would be needed to better characterize its nature and properties. "We -– completely unexpecte...
AFP
Washington (AFP) - The first galaxies may have formed far earlier than previously thought, according to observations from the James Webb Space Telescope that are reshaping astronomers' understanding of the early universe. Researchers using the powerful observatory have now published papers in the journal Astrophysical Journal Letters, documenting two exceptionally bright, exceptionally distant galaxies, based on data gathered within the first few days of Webb going operational in July. Their extreme luminosity points to two intriguing possibilities, astronomers on a NASA press call said Thursd...
AFP
Washington (AFP) - The James Webb space telescope has taken its first image of an exoplanet -- a planet outside our solar system -- as astronomers hail the device's performance since its launch last year. Images from the most powerful space telescope ever built have thrilled observers in recent months as it orbits the Sun a million miles (1.6 million kilometers) from Earth. Its latest pioneering pictures show the exoplanet, called HIP 65426 b, is a gas giant with no rocky surface and could not be habitable. "This is a transformative moment, not only for Webb but also for astronomy generally," ...
AFP
Washington (AFP) - The James Webb space telescope has revealed dazzling new detail of a previously known slice of the cosmos 32 million light-years away, in a new picture released by NASA and the European Space Agency (ESA). The infrared technology of the telescope, launched in December 2021, has allowed for an even clearer view of the so-called Phantom Galaxy than astronomers had ever seen before. "Webb's sharp vision has revealed delicate filaments of gas and dust in the grandiose spiral arms which wind outwards from the center of this image," NASA and the ESA said Monday. "A lack of gas ...
AFP
【▲ 図1: ジェイムズ・ウェッブ宇宙望遠鏡が6つの波長で捉えた褐色矮星「GLASS-JWST-BD...
sorae
Washington (AFP) - NASA's James Webb Space Telescope has captured stunning images of the planet Jupiter showing two tiny moons, faint rings and auroras at the northern and southern poles. "We hadn't really expected it to be this good, to be honest," said planetary astronomer Imke de Pater of the University of California, Berkeley. "It's really remarkable that we can see details on Jupiter together with its rings, tiny satellites, and even galaxies in one image," she said. De Pater headed the observations of Jupiter, the largest planet in our solar system, with Thierry Fouchet of the Paris Obse...
AFP
【▲ ジェイムズ・ウェッブ宇宙望遠鏡が撮影した「車輪銀河」。近赤外線カメラ「NIRCam」と中間赤外...
sorae
この宇宙では、光の速さはあらゆる速度の上限です。私たちが観ている天体の光もこの制限を受けるため、今こ...
sorae
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