James Webb Space Telescope
Webb telescope uncovers atmosphere on molten super-Earth TOI-561 b
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NASA's James Webb Space Telescope has detected signs of a thick atmosphere on the ultra-hot exoplanet TOI-561 b, challenging assumptions about such worlds. This rocky planet, orbiting its star in under 11 hours, shows lower temperatures and density than expected, suggesting a layer of gases above a magma ocean. The findings, published on December 11, highlight how intense radiation might not strip away all atmospheres from small, close-in planets.
Astronomers using the James Webb Space Telescope have detected clear differences between the morning and evening sides of the ultra-hot exoplanet WASP-121 b. The observations show that the evening terminator is hotter and more expanded than the morning side.
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Researchers have resolved a long-standing puzzle about Saturn's apparent changing rotation rate. Observations from the James Webb Space Telescope show that the planet's aurora drives a self-sustaining cycle of atmospheric heating and winds. The findings were published in the Journal of Geophysical Research: Space Physics.
Astronomers have proposed that an unusually large black hole in a galaxy from 13 billion years ago could be a primordial remnant from the universe's dawn. Spotted by the James Webb Space Telescope, the black hole is 50 million times the sun's mass but lacks surrounding stars, challenging traditional formation theories. Detailed simulations indicate it may have originated from density fluctuations after the big bang.
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Astronomers have confirmed the existence of black hole stars in the universe's first billion years, based on observations from the James Webb Space Telescope. These objects, known as little red dots, are vast balls of gas powered by central black holes that glow like enormous stars. The finding resolves a key mystery about these compact, bright galaxies.
Astronomers have discovered phosphine gas in the atmosphere of the brown dwarf Wolf 1130C using the James Webb Space Telescope. This finding, led by researchers at the University of California San Diego, challenges expectations as phosphine has been absent in similar objects. The detection could reveal insights into phosphorus chemistry in low-metal environments.
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Astronomers using the James Webb Space Telescope may have spotted the first cluster of primordial Population III stars in a galaxy called LAP1-B. These ancient stars, formed from pure hydrogen and helium, offer clues to the early universe's chemistry. The discovery, though promising, requires further confirmation due to its rarity.