![]() These are both light from the same, even more distant galaxy located behind this pair, stretched by the gravity of the closer one in a process called gravitational lensing. Near the heart of the elliptical galaxy, there are two faint red arcs. While the two foreground galaxies are attention-grabbing, they are not the only interesting part of this image. Pinning down where the dust is now can also help reveal the history of a galaxy. The incredible physics of black holes Jeff Forshaw at New Scientist Live this Octoberĭust in galaxies is key to the formation of new stars and planets, so tracing its presence may help us understand how and where those objects form. “Although the two foreground galaxies are relatively close astronomically speaking, they are not actively interacting.” “Webb’s near-infrared data also show us the galaxy’s longer, extremely dusty spiral arms in far more detail, giving the arms an appearance of overlapping with the central bulge of the bright white elliptical galaxy on the left,” said Rogier Windhorst at Arizona State University in a NASA blog post. While we could see this galaxy pair, called VV191, with Hubble alone, the addition of JWST data brings the details into stark relief, particularly the clouds of dust streaming out beyond the spiral arms of the galaxy on the right. Combining their data is allowing astronomers to get a more complete idea of the processes within the galaxies. The two telescopes observe using different wavelengths of light – JWST in infrared and Hubble in visible and ultraviolet. Together, these two powerful telescopes – the most powerful we have, in fact – have allowed us to trace the interstellar dust winding its way through the two galaxies. NASA, ESA, CSA, Rogier Windhorst (ASU), William Keel (University of Alabama), Stuart Wyithe (University of Melbourne), JWST PEARLS TeamĪstronomers have combined data from the James Webb Space Telescope (JWST) and the Hubble Space Telescope to create a stunning image of a pair of galaxies about 700 million light years away. An elliptical galaxy (left) and a spiral galaxy (right) seen by JWST and Hubble
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