“If it looks like a duck, swims like a duck, and quacks like a duck, then it’s probably a duck,” jokes Alan Stern, principal investigator for the New Horizons mission. In his view, the same applies to planets.
“If it looks like a duck, swims like a duck, and quacks like a duck, then it’s probably a duck,” jokes Alan Stern, principal investigator for the New Horizons mission. In his view, the same applies to planets.
