James Webb Telescope goes asteroid hunting around Fomalhaut, but finds 3 debris belts | Tech News

James Webb Space Telescope goes asteroid hunting around Fomalhaut, but finds 3 debris belts

  • The James Webb Space Telescope was looking for an asterid belt around the young shiny Fomalhaut star, but found something that is simply amazing.

By: HT TECH
| Updated on: May 09 2023, 20:46 IST
NASA reveals stunning Jupiter images captured by James Webb Space Telescope
James Webb SPace 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 SPace 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 SPace 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 SPace 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 SPace telescope
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Debris belts surrounding the star Fomalhaut is from the James Webb Space Telescope, The belts were revealed by Webb for the first time. (NASA)

If it is not the Hubble Space Telescope, then it is the James Webb Space Telescope that is making headlines. And this time, it is all about a luminous young star named Formalhaut. While the astronomers' eyes are always on the lookout for planetary systems around special stars, James Webb Telescope has revealed something else- debris belts. Actually, the Webb Telescope was on the job hunting for an asteroid belt around Fomalhaut star, but it found an entirely different thing instead that is equally exciting. These belts were revealed by Webb for the first time.

So, over the decades a lot has been discovered about planets that are far away from our solar sysyem, but that never provided the full picture, which the latest Webb effort is doing now. It has actually found all kinds of rock and icy debris in belts around the star.

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The tech that snapped the belts

James Webb Telescope is a tech marvel and the instrument that made these observations is called Mid-Infrared Instrument (MIRI). According to NASA, "MIRI has both a camera and a spectrograph that sees light in the mid-infrared region of the electromagnetic spectrum, with wavelengths that are longer than our eyes see."

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What is Fomalhaut?.

It is one of the brightest stars in our night sky. Not just that, Fomalhaut is the brightest star in the southern Piscis Austrinus constellation.

Fomalhaut is bright, very bright. In fact, it even puts our Sun in the shade! It is 16 times shinier than the Sun and nearly twice as massive.

It is a very young star, just 440 million years old, but it is likely that it has already passed the halfway point in its lifespan. Amazingly, it is less than a tenth the age of our Sun. And how far away is it? It is some 25 light years from Earth.

What James Webb Telescope revealed

NASA says that three concentric debris rings have been found orbiting Fomalhaut and they provide the fullest view to date of such structures outside our solar system.

A single ring was first found by astronomers way back in 1983. Now, Webb has added two that. And they are not the same. While one is a bright (inner one) the other is narrow.

What lends great excitement to this find is that these belts seem to have objects called planetesimals floating around. While some look to join together to form planets, others do not coalesce and stay in the form of asteroids and comets.

"Much like our solar system, other planetary systems harbor disks of asteroids and comets - leftover planetesimals from the epoch of planet formation," said University of Arizona astronomer Andras Gaspar, lead author of the study published in the journal Nature Astronomy.

The debris belts stretch across a gargantuan amount of space, nearly 14 billion miles (23 billion km) from Fomalhaut.

Scientists says that our very own solar system has two such belts - the main asteroid belt between Mars and Jupiter, and the Kuiper belt, beyond Neptune.

Why is it important?

Amazingly, these debris belts can offer insight into how planets actually form.

James Webb Telescope
This James Webb Telescope image reveals 3 nested belts extending out to 14 billion miles (23 billion kilometers) from the star. The inner belts – which had never been seen before – were revealed by Webb for the first time. Labels at left indicate the individual features. At right, a great dust cloud is highlighted and pullouts show it in two infrared wavelengths: 23 and 25.5 microns. Credits: NASA, ESA, CSA, A. Gaspar (University of Arizona). Image processing: A. Pagan (STScI) (NASA)
image caption
This James Webb Telescope image reveals 3 nested belts extending out to 14 billion miles (23 billion kilometers) from the star. The inner belts – which had never been seen before – were revealed by Webb for the first time. Labels at left indicate the individual features. At right, a great dust cloud is highlighted and pullouts show it in two infrared wavelengths: 23 and 25.5 microns. Credits: NASA, ESA, CSA, A. Gaspar (University of Arizona). Image processing: A. Pagan (STScI) (NASA)

"Planets form within the primordial disks surrounding young stars. Understanding this formation process requires a complete understanding of how these disks form and evolve," said team member Schuyler Wolff.

“With Hubble and ALMA, we were able to image a bunch of Kuiper Belt analogs, and we've learned loads about how outer disks form and evolve,” Wolff added. “But we need Webb to allow us to image a dozen or so asteroid belts elsewhere. We can learn just as much about the inner warm regions of these disks as Hubble and ALMA taught us about the colder outer regions.”

"There are many open questions about how the dust in these disks coalesces to form planetary embryos, how the planetary atmospheres form, et cetera," Wolff revealed.

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First Published Date: 09 May, 20:30 IST
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