释义 |
super-Earth
super-Earth n 1. (Astronomy) a hypothetical planet larger than the earth but smaller than the four gas giants Jupiter, Saturn, Neptune, and Uranus, thought to be orbiting the sun beyond the Kuiper belt but nearer than the Oort cloud: its existence is suggested by two known dwarf planets in a similar orbit 2. (Astronomy) any planet with conditions similar to those of the earth, but of much greater size |