This affects the entire galaxy as the material snowplows into surrounding gas and dust. The "quasar winds" are propelling hundreds of solar masses of material each year. Using the unique capabilities of Hubble, astronomers have discovered that blistering radiation pressure from the vicinity of the black hole pushes material away from the galaxy's center at a fraction of the speed of light. A quasar emits exceptionally large amounts of energy generated by a supermassive black hole fueled by infalling matter. This illustration shows a distant galaxy with an active quasar at its center. Launched on Christmas Day in 2021, Webb can study the beginning of time more closely, hunt for unobserved formations among the first galaxies, and peer inside dust clouds where stars and planetary systems are currently forming. The brightening near the edge of Saturn’s disk might be due to high-altitude methane fluorescence (the process of emitting light after absorbing light) or emissions in the planet’s ionosphere or both. But the darker-than-usual appearance of the northern hemisphere could be from “an unknown seasonal process affecting polar aerosols in particular,” NASA says. Unexpectedly, “the large, diffuse structures in the northern hemisphere do not follow the planet’s lines of latitude, so this image is lacking the familiar striped appearance that is typically seen from Saturn’s deeper atmospheric layers,” according to NASA.ĭifferences in the looks of Saturn’s northern and southern poles are normal, according to NASA, as the northern region experiences summertime while the southern hemisphere is exiting winter darkness. These exposures test Webb’s ability to spot faint moons around the planet and its rings, since any newly discovered moons could help scientists better understand Saturn’s present and past systems. The image was taken with Webb’s Near-Infrared Camera, known as NIRCam, as part of a Webb program that involves several exceptionally deep exposures of Saturn, according to NASA. The near-infrared observations of the ringed planet are a first for the highly sensitive telescope, according to NASA - which, at 1.5 million kilometers (nearly 932,000 miles) from Earth, observes the universe with wavelengths of light longer than those of other space telescopes.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |