Science Hack Day
Chariklo is an asteroid 302 kilometers in diameter. It will need to be hollowed out to create a terrarium.
Each one of Science Hack Day’s 3,913 followers can have 7.72 hectares of land on the inside surface.
One year on Chariklo lasts 22,863 Earth days.
Increase the speed of rotation to 13 minutes for Earth-like gravity.