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Interplanetary communication

Due to the vast distances communication between the planets will never be real time (until we unlock the faster than light communication using quantum entanglement, tachyons or any other currently theorethical or still undiscovered physics).

Just getting a signal from Mars, the closest planet to us takes several minutes at the closest point. The delay all the way to Pluto is five hours. The fact just need to be accepted that the real time communication just isn't possible in space.

The delay due to the distance is not the only issue. The bandwidth is another limiting factor for the speed of communication. Current bandwidth from Mars is up to 32kbit/s. And that requires NASAs biggest Deep Space Network disks to catch. And those disks are 70 meters across! The bandwidth also goes down further we get. In 2015 when New Horizon passed Pluto it took 1 megapixel pictures of the dwarf planet. Sending those pictures back to earth took the 5 hours due to the distance and additional 42 minutes just because of the time it takes to transfer those 2,5MB images through the 1kbit/s connection.

Of course there are more efficient wireless communication methods at our disposal. So why are we still using basic radio signals? While on earth those technologies are basically only limited by the curvature of earth, with any longer distances the accuracy they require and especially the energy requirements just aren't feasible at longer distances until the other end also has enough power to waste on communication instead of focusing most of it in securing core functionality and securing survival.

Anyway, the delays in communication might feel huge by today's standards. But few centuries back, before internet, radio- and telecommunications it could take weeks or even months to get a message just across the continent.