“Talking to the Kuiper belt is like talking to an Ent, from the other side of the forest.”

— Astrophysicist @ascendingNode, on communicating with the New Horizons spacecraft at the edge of the solar system, 8 December 2018. Note the distance between Earth and the probe (1.57 billion KM) and the power of the signal we receive from it (1.46 x 10^-21 kW, which is a very very very small voice to hear.