4 ms·
What does "cold brown" mean in this context? How can it be cold near the sun?
by akerro 6y ago
What does "cold brown" mean in this context? How can it be cold near the sun?
- perlgeek 6y agoThey are still several light years away from the sun, so "near" only on astronomical scales. "Brown dwarf" is an object bigger than a usual planet, but not big enough to spark and sustain nuclear fusion in the core. "cold" means "not hot enough to shine bright like a star".