Tag: James Webb Space Telescope

The James Webb Space Telescope has taken another extraordinary photo. The subject is the Serpens Nebula, which lies about 1,300 light-years from Earth. And the new JWST image showcases a very special phenomenon long theorized to exist, but never before observed. In the upper left part of the photo are several “protostellar outflows,” or jets of gas erupting out of newborn stars. While we’ve seen such outflows before, we’ve never seen them line up in the same direction as in the JWST image; NASA likens them to “sleet pouring down during…

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The most distant carbon ever seen has been discovered by the James Webb Space Telescope (JWST) in a galaxy that we see as it existed just 350 million years after the Big Bang. The detection is notable because not only is it the oldest carbon known, it is the first time that an element heavier than hydrogen or helium — what astronomers call “metals” — has been confirmed in the very early universe. “Earlier research suggested that carbon started to form in large quantities relatively late — about one billion…

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The dwarf galaxy NGC 4449 is the star of the show in the James Webb Space Telescope‘s latest cosmic portrait. Located 12.5 million light-years away in the constellation of Canes Venatici, the Hunting Dogs, NGC 4449 has much in common with our very own Large Magellanic Cloud (LMC), the satellite galaxy orbiting the Milky Way. Both are small and irregular in shape and each has a distinctive bar running through its center. However, whereas the LMC has one extreme region of star formation, which is the 30 Doradus region famously…

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A surprisingly low reservoir of methane may explain how a planet around a nearby star grew weirdly puffy, according to new observations from the James Webb Space Telescope (JWST(. The finding shows that planetary atmospheres can inflate to remarkable amounts without employing esoteric theories of planet formation, astronomers say. “The Webb data tells us that planets like WASP-107 b didn’t have to form in some odd way with a super small core and a huge gassy envelope,” Michael Line, an extrasolar planetologist at Arizona State University, said in a statement.…

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The Orion Nebula may be a familiar and well-studied celestial object, but new images from the James Webb Space Telescope (JWST) show this star-forming cloud of gas and dust in an incredibly new and vibrant light. The Orion Nebula, also known as “Messier 42” (M42), is located around 1,500 light years from Earth toward the constellation of Orion. This makes it the closest large star-forming and stellar nursery to our solar system.  Visible to the naked eye under dark skies, the Orion Nebula has been studied throughout human history, but…

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Astronomers now have a way to figure out how gas-giant planets form, thanks to a discovery by the James Webb Space Telescope (JWST) of ammonia “isotopologues,” which are molecules that contain the same elements but with differing numbers of neutrons. The nucleus of an atom is made from a bunch of protons and neutrons, and while the number of protons within an element does not change — for example, carbon atoms always contain six protons and nitrogen atoms always have seven protons — the number of neutrons can vary. When…

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The James Webb Space Telescope (JWST) has found a galaxy in the early universe that’s so massive, it shouldn’t exist, posing a “significant challenge” to the standard model of cosmology, according to the study authors. The galaxy, called ZF-UDS-7329, contains more stars than the Milky Way, despite having formed only 800 million years into the universe’s 13.8 billion-year life span. This means they were somehow born without dark matter seeding their formation, contrary to what the standard model of galaxy formation suggests. How this could have happened is unclear, but…

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