The signal from Saturn's moon takes ninety minutes to arrive some days, just over an hour on others—a gap that reflects the vast, ever-shifting geometry of two worlds in orbit. The post Titan is never the same distance from Earth twice: the gap can run from about 1.2 billion kilometres to nearly 1.65 billion depending on where both worlds sit in their orbits, stretching a signal’s one-way trip from just over an hour to past ninety minutes appeared first on Space Daily .