[mura_gadi (Steve)]

There are a few good examples of "aliens" already visiting, but they are wiped out from all the gobblegook from solo reporting...

The video from the first flight of the Concorde is a little more than reflective light imo.
The Italian soccer match is another, that's a stadium worth of people and left the broadcaster's a little confused.
The mass sighting over London, that was in the 1000's of people reporting something strange in the late 50's/early 60's.

But it does beg the question with such advanced technology required for space travel why we saw them at all. When our own technology in active camouflage technology is nearly good enough to fool most people already.

I'm on the side of species causing their own destruction well before interstellar space travel is achieved. I know there are plenty of very smart people saying it impossible, but we didn't think people could travel faster than horses only 120 years ago, and then the doubters repeated similar argument before we broke the speed of sound.

If you remove the need to have a life form onboard, the probe could with stand forces way in excess of what we currently consider feasible. But even faster than light travel is not enough, your essentially looking at quantum entanglement in a physical form. Removing any need for travel as your already there so to speak...

*Another angle is to hack the systems used to detect aliens in the first place... posted an article about a CSIRO blog under general that could be used easily used for a wide range of purposes. - "Digital invisibility cloaks outsmart smart devices"