NASA James Webb Telescope reveals amazing space secret that eluded Hubble Telescope | Tech News

NASA James Webb Telescope reveals amazing space secret that eluded Hubble Telescope

NASA’s James Webb Telescope has managed to capture first-of-its-kind galaxies with stellar bars. It has thereby revealed an astonishing space secret.

| Updated on: Jan 07 2023, 20:52 IST
NASA reveals stunning Jupiter images captured by James Webb Space Telescope
James Webb Telescope
1/6 Amazingly, currently, on Jupiter, there are auroras, storms, extreme temperatures and powerful winds stirring things up, according to NASA. The images captured by the James Webb Space Telescope could give scientists a look at the conditions of the gas giant. (NASA)
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2/6 Planetary astronomer Imke de Pater, professor emerita of the University of California, Berkeley said, “We hadn’t really expected it to be this good, to be honest. It’s really remarkable that we can see details on Jupiter together with its rings, tiny satellites, and even galaxies in one image.” (NASA)
James Webb Telescope
3/6 The images were captured by the telescope's Near Infrared Camera (NIRCam) instrument on July 27, which highlighted the planet's unique features. According to NASA, the NIRCam has three specialized infrared filters that showcase details of the planet. (AFP)
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4/6 The image was created by compositing several images. Auroras are visible near the Northern and Southern poles of the planet. According to NASA, the auroras shine in a filter that is mapped to redder colors, which also highlights light reflected from lower clouds and upper hazes. (NASA)
James Webb Telescope
5/6 The Great Red Spot as well as other clouds can be visible in the images as white since it is reflecting the sunlight. The Great Red Spot is a giant vortex which has been swirling around on Jupiter’s surface for a long time. Jupiter’s 2 moons, Amalthea and Adrastea can also be seen “photo-bombing” the planet. (REUTERS)
James Webb Telescope
6/6 Thierry Fouchet, a professor at the Paris Observatory, as part of an international collaboration for Webb’s Early Release Science program said, “This one image sums up the science of our Jupiter system program, which studies the dynamics and chemistry of Jupiter itself, its rings, and its satellite system.” (NASA/AFP)
James Webb Telescope
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Prior to the James Webb Telescope, images from the Hubble Space Telescope had never detected bars at such young epochs. (NASA/CEERS/University of Texas at Austin)

NASA's latest and most expensive James Webb Space Telescope is outdoing the Hubble Space Telescope in every way. That was expected, since the tech on Hubble Telescope is decades old. In the latest development, the images from the James Webb Telescope reveals galaxies with stellar bars—elongated features of stars stretching from the centers of galaxies into their outer disks for the first time. The study says that these galaxies are from the time when universe was just 25 percent of its present age. This means that there were Milky Way Galaxy-type galaxies even as far back in time as that. A space secret that even Hubble was not able to reveal.

It is not like the Hubble Space Telescope had never snapped galaxies. However, the Hubble telescope had never detected bars at such a young age.

"The bars hardly visible in Hubble data just popped out in the JWST image, showing the tremendous power of JWST to see the underlying structure in galaxies," Shardha Jogee, professor of astronomy at The University of Texas at Austin said. reported that she described data from the Cosmic Evolution Early Release Science Survey (CEERS), led by UT Austin professor, Steven Finkelstein.

The research team also found another barred galaxy named EGS-24268, which also dates back to 11 billion years. And this makes two barred galaxies existing farther back in time than any previously discovered.

James Webb Telescope vs Hubble Telescope

The new James Webb Space Telescope is much more advanced than the much older Hubble Space Telescope. It can unveil structures in distant galaxies better than Hubble due to two main reasons – first, its larger mirror provides more light-gathering ability. It helps the Webb telescope to see farther objects and with higher resolution. Second, it can see through dust better as it observes at longer infrared wavelengths than the Hubble Telescope. In short, James Webb Telescope can see farther back in time than Hubble Telescope can. In fact, Webb Telescope can see back almost to the time of the Big Bang.

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First Published Date: 07 Jan, 20:21 IST