![]() philippeholthuizen J06:56 PM Arif, the one's captured by Hubble would be 4,600,000,020 years old. "The really important thing to appreciate it how much better this is than previous images," Goodman said. In the James Webb telescope, it's mounted on three arms, resulting in 6 spikes. To further show just how advanced Webb is and why infrared light is useful, experts at the American Astronomical Society's (AAS) WorldWide Telescope (WWT) project have put together an online tool that places Webb's First Deep Field against other images of the universe taken by older telescopes.Īlyssa Goodman, astronomy professor at Harvard, demonstrated how the tool works in a tweet below. So Webb can detect and study the first galaxies that formed after the Big Bang." At higher and higher redshifts, where we look back to when the universe was just a fraction of its current age, the ultraviolet and optical emission from the earliest galaxies gets more and more shifted into the infrared, to wavelengths that Hubble cannot see but which Webb is ideally suited to measure. "But Hubble is primarily an optical telescope while Webb is an infrared telescope. "Hubble produced many wonderful discoveries, including the Hubble Deep Field's imaging of the peak era of galaxy formation, at a redshift of about 2, when the universe was just a third of its current age," Michael Barlow, emeritus professor of physics and astronomy at University College London in the U.K., told Newsweek. ![]() ![]() The key difference between Webb and Hubble is that while the Hubble telescope views the universe in optical light, Webb sees in infrared light, which is ideal for peering as far back as possible into the cosmos. To some, the image might look no different than other pictures of deep space, such as the famous Hubble Deep Field images that also show countless galaxies unfathomably far away. American Astronomical Society/WorldWide Telescope A screenshot from the American Astronomical Society's WorldWide Telescope tool that allows users to compare the new James Webb Space Telescope image to older images of the cosmos. ![]()
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