Examples of using "спутником" in a sentence and their english translations:
He and his companion asked me to come along with them.
Due to Triton's retrograde orbit, its density, and its composition, astronomers theorize that Triton was not originally a satellite of Neptune, but was captured by Neptune's gravitational pull, forcing it into an orbit around the planet.
Charon is considered to be a satellite of the (dwarf) planet Pluto. However, because its diameter is more than half as large as that of Pluto itself, it can be considered an equal partner; and Pluto and Charon can be considered a double planet.