Are there aliens? yes, almost certainly. Have any visited Earth? no, definitely not.
It's a probability thing. It's so unlikely that intelligent life is within the range of receiving our earliest radio transmissions that it's virtually certain that nobody knows we're here.
On top of that, they'd need to be so far advanced that they'd be capable of that kind of space travel... i.e. close to the speed of light (not faster cos that's science fiction).
On top of that, civilisations have a finite span of existence, so it's even more unlikely that intelligent life has existed long enough to become advanced enough, within the distance of our radio transmissions to know we're here and be able to get here.
On top of that , they'd have do be dumb enough to travel here, rather than send a radio signal of some kind... or a probe... cos those things would be a bit more cost effective.... and being dumb enough and advanced enough doesn't add up.
On top of that, the people who believe in alien UFOs also have a tendency to believe in ghosts, conspiracy theories, certain globes not being globes (tip-toes around the forum rules very carefully there)... the healing powers of crystals, and gluten-free diets for non-Coeliacs.
I just realised... any civilisation advanced enough to travel to earth would have created a 140 deg FOV VR headset and they'd be on a 21 series nvidia card by now.
So why would they want to leave their games room... let alone leave their planet?
Richooal said:When I put on my Headset, I do it to use a VR app or play a VR game. I have a real home to look at and don't need a virtual one.All I need is a VR interface to maintain and launch my Library content and a settings interface for the hardware/software.