Triggerfish Writing

Brown Dwarfs — Planets, stars, or something entirely different?

Artist Impression: NASA/JPL-Caltech

In November 2018, amateur astronomer Dan Caselden was running an automated search of NASA space telescope images on his computer, for the Backyard Worlds: Planet 9 project, when he found something weird. About 50-light-years away from Earth, in a field imaged by the Wide-field Infrared Survey Explorer, this object was extremely faint and traveling at 200 km per second. They named…