Douglas Adams famously described space as “big. Really big.” Which is of course true. The largest stars in the universe are so big, it would an aeroplane hundreds of years to fly round their circumference. Each star itself is separated by a colossal expanse, in The Milky Way, the average closest distance between stars is about 5 light years, so a few million years when it comes to taking a jet. But this is itself a trivial distance. You might think stars are spread out and scattered in The Milky Way, but the distance between the Milky Way and The Andromeda galaxy is about 240,000 light years. When you begin to realise how much of The Universe is filled with nothing, you start to realise how much of an insane idea it is to fling ourselves off the Earth in thin rocket powered metal boxes. The very fact we have the technology to be able to do so is incredible.
I remember reading a science fiction theory as to humanities origin. The idea was that aliens realised they couldn’t perform proper galactic surveys over such distance so send out biological probes, in other words bacteria, to land on planets and evolve into intelligent species which can develop radio and report back. It may just be that biology is not a natural science but a form of technology to a sufficiently advanced species. Of course, Occam’s razor says it’s just more likely some single celled life started on it’s own.
But these kind of theories are always interesting to think about, until tomorrow, goodnight.