NASA's James Webb Space Telescope has detected hints of water vapor but researchers are not sure, as yet, if the signals are from the rocky planet or the star it orbits.
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Exoplanet
The exoplanet, GJ 486 b, liestoo close to its host star to have an atmosphere, but Webb's finding suggests the opposite.
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Red dwarf star
The exoplanet, roughly 30% larger than Earth, is orbiting a red dwarf star, which is the most common type of star found in the universe.
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Possibility
However, it's equally possible that the water vapor signals are from the planet's host star. Even on our Sun, water vapor can exist in what's called sunspots.
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Further observations
Further studies may provide insights into Webb's findings of the water vapor signals.