It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
The Fermi paradox can be asked in two ways. The first is, "Why are no aliens or their artifacts found here on Earth?" If interstellar travel is possible, even the "slow" kind nearly within the reach of Earth technology, then it would only take from 5 million to 50 million years to colonize the galaxy. This is relatively brief on a geological scale, let alone a cosmological one. Since there are many stars older than the Sun, and since intelligent life might have evolved earlier elsewhere, the question then becomes why the galaxy has not been colonized already. Even if colonization is impractical or undesirable to all alien civilizations, large-scale exploration of the galaxy could be possible using various means of exploration. Travel times may well explain the lack of alien visits to Earth, but a sufficiently advanced civilization could potentially be observable over a significant fraction of the size of the observable universe
Watching, studying and observing the species on earth like we do to animals in distance places, sometimes abducting them and returning to their natural habitats.
I am not sure if this qualifies but f you look at the Sumerian tablets carefully and art in museums dating back thousands of years it is evident that the artists either saw or heard of flying disks. There are no ifs ands or buts about what those are, they are flying disk shaped crafts. Puna Punku should also qualify and tons of feats accomplished long ago .
That's a big question of mine. If extraterrestrial entities have been on Earth for so long and also stabilized some civilizations, outposts or whatever like some people usually say, why we can't find artifacts or any kind of vestige from extraterrestrials beings on Earth?