posted on May, 1 2013 @ 12:54 PM
Absolutely you can. You just need to break free from the traditional definition of 'signal', which has been something like radio wave of some
amplitude and duration that is distinguishable from background noise. So say we detect something. How can we verify the signal is from ET intelligence
when we don't speak their language? Scientists from SETI know even a strong signal means just that and in no way evidence of intelligence. Of course
they would want funding to 'translate' the signal... It's a dead end.
The 'signal' imo will be something visual. Think Nazca lines made by aliens or cities visible from orbit. Found on some planet or asteroid. So my
advice is search reconnaissance photos of plantery bodies. If and big if here, the Aliens wanted to communicate some info to visitors from outer
space, they would likely use something visual, visible from space. Pictures are as close to universal language as it can get. The people that made
Nazca lines seems to have understood this.