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Astronomers have discovered a rare hypervelocity L subdwarf star racing through the Milky Way. More remarkably, this star may be on a trajectory that causes it to leave the Milky Way altogether.
Baltimore MD (SPX) Jan 10, 2024 - Astronomers using NASA's James Webb Space Telescope have found a brown dwarf (an object more massive than Jupiter but smaller than a star) with infrared emission from methane, likely due to energy i
NASA's James Webb Space Telescope has made a surprising observation, detecting aurorae on a cold, lonely brown dwarf known as W1935.
<p>Astronomers using NASA’s James Webb Space Telescope have found a <a href="https://webbtelescope.org/glossary.html#h3-CK-3638b3e7-aa22-480f-83ea-d22b13081886" target="_blank">brown dwarf</a> (an object more massive than Jupiter but smaller than a star) with infrared <a href="https://webbtelescope.org/glossary.html#h3-CK-3247f39b-978f-4e47-a536-14fbd3d857b1" target="_blank">emission</a> from methane, likely due to energy in its upper atmosphere. This is an unexpected discovery b...
Infrared emission from methane suggests atmospheric heating by auroral processes.