how is it possible for NASA to establish a signal/connections so far in outer space but we can’t find signals in certain rooms in our homes?

Question

how is it possible for NASA to establish a signal/connections so far in outer space but we can’t find signals in certain rooms in our homes?

In: Physics

Answer 1

Comparing NASA’s [Deep Space Network](https://en.wikipedia.org/wiki/NASA_Deep_Space_Network) to commercial WIFI or cellular technology is comparing apples and oranges. NASA has a global network of gigantic (70m/230ft wide) radio telescopes that send and recieve powerful signals (up to 400 kilowatts) in narrow beams that must be carefully aimed, and their space probes likewise have gigantic antennae that send and recieve in one direction.