Giant free-floating planets drift in space with no stars. New observations from the Webb telescope suggest they could have their own planets orbiting them.
It's possible to see the full circle rainbow, but sky conditions have to be just right. They're most often seen by pilots, who have a good view of the sky.
In a surprisingly chaotic early universe, the 1st star-forming clouds experienced supersonic turbulence only a few hundred million years after the Big Bang.