SORU: paragrafta boş bırakılan yere uygun düşen cümleyi bulunuz
The planets are the celestial bodies that revolve round the sun in elliptical orbits. ____ . There are also a large number of minor planets, commonly called asteroids. Today many important questions concerning the planets can be answered by means of probes sent to them. These include the measurement of the magnetic field, if any, of the planets, the study of their atmospheres and, in some cases, surface conditions.