It’s one of the most incredible naked eye sites in the night sky—and it’s now been imaged by the James Webb Space Telescope (JWST).
The Orion Nebula—also known as M42—is a stellar nursery, home to newborn stars. It’s the closest such region to us in space and maybe, just maybe, where our own star, the Sun, formed about 4.5 billion years ago.
A diffuse cloud of gas and dust about 1, 300 light-years distant, this brightest nebula of all is part of “Orion’s Sword” that hangs down from Orion’s Belt.
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The images here are composites that use JWST’s NIRCam instrument’s filters to isolate different wavelengths of light reflected from ionized gas, hydrocarbons, molecular gas, dust and scattered starlight.
In the main image, above, you can see the Orion Bar, a ridge of dense gas and dust that’s lit-up by hot, young massive stars of the nearby Trapezium Cluster, just out of shot.
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An area of space that gets zapped with ultraviolet (UV) radiation from massive young stars—or, put more simply, is heated by starlight—is what astronomers call a Photo-Dissociation Region (PDR).
Credit: NASA, ESA, CSA, PDRs4All ERS Team; image processing Olivier Berné. Credit for the HST image: NASA/STScI/Rice Univ./C.O’Dell et al. – Program ID: PRC95-45a.
The images come from the Photo-Dissociation Regions For All Early Science Release (PDRs4All ERS) team, researchers that use humanity’s most advanced telescopes to study these hot, ionized environments.
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As well as being compared, above, to previous images of the region taken by the Hubble Space Telescope, the Orion Bar was last week captured by the same PDRs4All team using the W. M. Keck Observatory on Hawaiʻi Island.
A James Webb Space Telescope (JWST) team using W. M. Keck Observatory in Hawaiʻi has captured from ... [+] Maunakea the most detailed infrared images yet of the region in Orionʻs “sword” (specifically the Orion Bar) that gets zapped with intense radiation from young massive stars. Th
“Observing PDRs is like looking into our past, ” said Emilie Habart, an Institut d’Astrophysique Spatiale associate professor at Paris-Saclay University and lead author of a paper on this study. “These regions are important because they allow us to understand how young stars influence the gas and dust cloud they are born in, particularly sites where stars, like the Sun, form.”
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As a bonus the PDRs4All ERS team also published this incredibly beautiful image of the northern region of the Orion Nebula that again shows its incredible filaments:
You can see the Orion Nebula with your own eyes right now if you get up at hour before dawn and look east. It’s in the constellation of Orion, “the Hunter.”
It looks like a fuzzy patch of diffuse light and is just beside Alnitak, Alnilam and Mintaka—the three stars of Orion’s Belt, which is between ruddy star Betelgeuse and blue star Rigel. Although you can see it with the naked eye the Orion Nebula is best seen through a pair of binoculars or a small telescope.
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As well as being compared, above, to previous images of the region taken by the Hubble Space Telescope, the Orion Bar was last week captured by the same PDRs4All team using the W. M. Keck Observatory on Hawaiʻi Island.
A James Webb Space Telescope (JWST) team using W. M. Keck Observatory in Hawaiʻi has captured from ... [+] Maunakea the most detailed infrared images yet of the region in Orionʻs “sword” (specifically the Orion Bar) that gets zapped with intense radiation from young massive stars. Th
“Observing PDRs is like looking into our past, ” said Emilie Habart, an Institut d’Astrophysique Spatiale associate professor at Paris-Saclay University and lead author of a paper on this study. “These regions are important because they allow us to understand how young stars influence the gas and dust cloud they are born in, particularly sites where stars, like the Sun, form.”
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As a bonus the PDRs4All ERS team also published this incredibly beautiful image of the northern region of the Orion Nebula that again shows its incredible filaments:
You can see the Orion Nebula with your own eyes right now if you get up at hour before dawn and look east. It’s in the constellation of Orion, “the Hunter.”
It looks like a fuzzy patch of diffuse light and is just beside Alnitak, Alnilam and Mintaka—the three stars of Orion’s Belt, which is between ruddy star Betelgeuse and blue star Rigel. Although you can see it with the naked eye the Orion Nebula is best seen through a pair of binoculars or a small telescope.
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