I have a question related to SETI and other radio transmitting and receiving programs. I understand that since around 1900 we have been transmitting electromagnetic signals. This signals travel out into the universe at the speed of light in a sphere and by now might have reached up to 10 million stars.
As those electromagnetic transmissions of Hitler conducting the Olympics travel into the galaxy I would understand that they would meet some pretty strange objects. Stars, Black holes Pulsars etc.
In the meantime the earth does not stay in one place. the earth orbits the Sun that inturn orbits the Milky Way. Assuming a future trajectory of the Earth would it be possible to tune and point our receivers so as to hear electromagnetic transmissions from the future.
For example as an electromagnetic wave bends around a black hole the rippling effect around a black hole may cause the transmission to travel back in time.
Any suggestions?