english: It wasn't till Huygens had two things: He had a good theory of planetary rings and how the solar system operated, and he had better telescopic, more fine-grain data in which he could figure out that as the Earth is going around faster -- according to Kepler's Laws -- than Saturn, then we catch up with it.
non_english: Huygens mal teda dve veci. Mal dobrú teóriu o planetárnych prstencoch a o tom, ako funguje slnečná sústava. Mal aj lepší teleskop, a teda presnejšie údaje. Odvodil si, že keďže Zem obieha podľa Keplerových zákonov okolo Slnka rýchlejšie než Saturn, dobieha ho.