Video: How Do We Know Where Faraway Spacecraft Are?

NASA has dozens of robotic spacecraft exploring our solar system – and beyond. So how exactly do we navigate spacecraft that are so far away? Scientists and engineers on Earth can use precise measurements to know where faraway spacecraft are by using the Deep Space Network, NASA’s international collection of giant radio antennas used to communicate with spacecraft at the Moon and beyond.

Click here to learn more about how deep space communications work, plus a quick look at how the Doppler Effect helps determine a spacecraft’s location and spe