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Brown Dwarfs

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NASA’s SPHEREx Telescope Sees Menagerie of Brown Dwarfs

NASA Study: Celestial ‘Accident’ Sheds Light on Jupiter, Saturn Riddle

Two Bizarre Brown Dwarfs Found With Citizen Scientists’ Help

NASA-funded Citizen Science Project Discovers New Brown Dwarf

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This illustration shows brown dwarfs are more massive than planets but not quite as massive as stars.

The faster a brown dwarf spins, the narrower the different-colored atmospheric bands on it likely become, as shown in this illustration.

By using NASA's Spitzer Space Telescope, astronomers have found that the varying glow of brown dwarfs over time can be explained by bands of patchy clouds rotating at different speeds, as shown in this artist's concept.

This graph shows the brightness variations of the brown dwarf named 2MASSJ22282889-431026 measured simultaneously by both NASA Hubble and Spitzer space telescopes.

Two space-based telescopes, NASA's Spitzer and Swift, teamed up with ground-based observatories to observe a microlensing event caused by a brown dwarf.

This artist's concept shows a brown dwarf, an object that is at least 13 times the mass of Jupiter but not massive enough to begin nuclear fusion in its core, which is the defining characteristic of a star.

This artist illustration shows the atmosphere of a brown dwarf called 2MASSJ22282889-431026, which was observed simultaneously by NASA Spitzer and Hubble space telescopes. The results were unexpected, revealing offset layers of material.

This artist conception based on data from NASA Wide-field Infrared Survey Explorer illustrates what brown dwarfs of different types might look like to a hypothetical interstellar traveler who has flown a spaceship to each one.

A young, free-floating world sits alone in space in this illustration. The object, called WISEA J114724.10-204021.3, is thought to be an exceptionally low-mass brown dwarf.

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