Brown Dwarfs

Brown dwarfs are substellar objects that are not massive enough to sustain nuclear fusion of ordinary hydrogen into helium in their cores, unlike a main-sequence star. Instead, they have a mass between the most massive gas giant planets and the least massive stars, approximately 13 to 80 times that of Jupiter. However, they can fuse deuterium, and the most massive ones can fuse lithium. Astronomers classify self-luminous objects by spectral class, a distinction intimately tied to the surface temperature, and brown dwarfs occupy types M, L, T, and Y. As brown dwarfs do not undergo stable hydrogen fusion, they cool down over time, progressively passing through later spectral types as they age. Despite their name, to the naked eye, brown dwarfs would appear in different colors depending on their temperature. The warmest ones are possibly orange or red, while cooler brown dwarfs would likely appear magenta to the human eye.

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JWST Accidentally Found 21 Brown Dwarfs

Webb targets from October 12th to 16th include: brown dwarfs, Epimetheus (AKA Janus, a moon of Saturn) and more

Ground-Breaking Number of Brown Dwarfs Discovered

Citizen Scientist Discovers 34 New Ultracool Brown Dwarfs

Sand clouds are common in atmospheres of brown dwarfs

A New Technique Finds a Bundle of Brown Dwarfs

Ground-breaking number of brown dwarfs discovered

Twin Brown Dwarfs Discovered, Orbiting one Another at Three Times the Distance From the Sun to Pluto

Two new studies using data from NASA’s retired Spitzer Space Telescope shed light on giant exoplanets and brown dwarfs, objects that aren’t quite stars but aren’t quite planets either.

An Accidental Discovery Hints at a Hidden Population of Cosmic Objects. Brown dwarfs aren’t quite stars and aren’t quite planets, and a new study suggests there might be more of them lurking in our galaxy than scientists previously thought.

Brown Dwarfs are Probably Much More Common in the Milky Way Than Previously Believed

Unravelling the mystery of brown dwarfs

Five Astronomical Objects Help Unravel the Mystery of Brown Dwarfs

Brown Dwarfs Could Reveal Secrets of Planet and Star Formation

Exoplanets and Brown Dwarfs Could Be Used as Detectors of Light Dark Matter, Physicists Say

These 3 spinning brown dwarfs are the fastest 'failed stars' ever seen

Brown Dwarfs can Spin so Fast They Almost Tear Themselves Apart

“Failed Stars” Caught Speeding: Astronomers Clock the Fastest-Spinning Brown Dwarfs

Spitzer Discovers Three Most Rapidly-Rotating Brown Dwarfs

Caught speeding: Clocking the fastest-spinning brown dwarfs