Just because Pluto lost its planetary status doesn’t mean it’s any less interesting to astronomers.
NASA on Wednesday reported two football-shaped moons that wobble so unpredictably that the sun could rise in a different direction every day from either of the moons.
The Hubble Telescope recorded the oddball orbits of the oblong moons Nix and Hydra, which wobble because they are embedded in a constantly shifting gravitational field created by dwarf planet Pluto and its largest moon, Charon. Pluto and Charon share a common center of gravity.