The shrinking of Earth not only limits space for humanity but also threatens life due to a lack of oxygen and the loss of protective magnetic fields.
Pluto is the second-heaviest dwarf planet known in the Solar System (after Eris) and the tenth heaviest object directly orbiting the Sun. Previously classified as a planet, Pluto is now considered the largest member of a distinct region known as the Kuiper Belt. Pluto and its largest moon, Charon, are often regarded as a double system because the center of mass of their orbits does not lie within either body. |
