There are almost assuredly aliens in the universe.
There is almost no chance they are here in the solar system.
The amount of energy needed to cross between the stars is enormous. More than we as a whole of a world produce would be needed to bring a starship with live aliens to Earth from another star. To hide that energy use would be impossible to hide: stealth is space doesn't work.
There are almost assuredly aliens in the universe.
There is almost no chance they are here in the solar system.
The amount of energy needed to cross between the stars is enormous. More than we as a whole of a world produce would be needed to bring a starship with live aliens to Earth from another star. To hide that energy use would be impossible to hide: stealth is space doesn't work.
We would see them coming.