LMR-056 · Stars
Brown Dwarf
Not quite a star, not quite a planet. The universe's middle child.
§ A first look
§ Depths
Six ways into the same idea — from bedtime story to chalkboard. No order required.
L1 · Crayon
Told like a bedtime story.
For a curious 10-year-old. No jargon. Just a picture in your head.
To become a real star, a ball of gas needs to be heavy enough that its own weight crushes its middle so hard that the stuff there catches fire and starts shining. Some balls of gas come out a little too small for that. They're too big to be planets, but not heavy enough to ever properly switch on like a star. So they just sit there, very faintly glowing from the heat of when they first formed, slowly dimming with no real career plan. These in-between things are called brown dwarfs. The universe's middle children. We see you. Sort of. With infrared.
§ Strange but true
- 01Failed stars — too big to be planets, too small to fuse hydrogen. Cosmic almost-rans.
- 02Some are cooler than a cup of tea. You could, in principle, touch one.
- 03They drift through the galaxy in the billions, unseen, between every star.
§ From the field journal
Brown Dwarf
"Not quite a star, not quite a planet. The universe's middle child."
— observed, sketched, not yet fully understood.
§ Nearby