Recently some have indicated it is reasonable to consider Aliens as the source of unidentified objects in the sky.
Just as a primer: Our nearest star system is more than 4 light-years away. Lets assume someone (aliens) could travel at one tenth the speed of light, it would take about 40 years for a one way trip.
And how fast is that? About 67 million miles per hour.
Get the picture?
We will in the foreseeable future travel to other planets or moons within our solar system, but as yet as far as we know, travel to other systems is not in the cards.
Just as a primer: Our nearest star system is more than 4 light-years away. Lets assume someone (aliens) could travel at one tenth the speed of light, it would take about 40 years for a one way trip.
And how fast is that? About 67 million miles per hour.
Get the picture?
We will in the foreseeable future travel to other planets or moons within our solar system, but as yet as far as we know, travel to other systems is not in the cards.