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NASA finds humanity would totally fumble asteroid defense
(www.theregister.com)
This is a most excellent place for technology news and articles.
Whenever I dare to hope about the lofty, admirable star trek future, I remember that space is completely unforgiving and we just aren't up to the task for anything more than a token selfie by the best dozen humans we can possibly produce with great effort and training.
As a species, we aren't going to spread out there. Still too primitive, and probably too self-destructive to make it out of this phase of evolution. This might be one of those great filters scientists postulate as to why there aren't signals from innumerable civilizations out there.
We aren't even capable of caring for one another, let alone the EASIEST to maintain, most naturally human friendly habitat we would ever encounter in the cosmos as we evolved to fit it. No airlocks, the air/water/waste recycling was already fully automated, all we had to do was not recklessly grow/metastasize to the point we strain the absolutely massive system out of greed and glut, and stop carelessly shitting where we sleep. We all know how that's been going since we figured out how to make dead animal poison rocket us accross town.
Master space? Master planetary defense? We can't even defend this world from our own habitual consumerism. We'll be lucky if we aren't scattered tribes living near the old hardened structures of the before times for emergency shelter from the new normal weather events in a hundred years. We're already starting to argue over the resources it's taking to rebuild population centers from the current new normal. We have played pretend we were since human civilization began, but we are NOT and never have been this world's owners or masters, and we are still very much its subject.
And Reminder, what we're doing and have been doing in decades won't be undone for millions of years. The Earth is a self-correcting system, and the damage we're doing is inconsequential to its 3.8 billion year old, beautiful story of life growing out of every crevice, just not on a timescale humans can benefit from or even truly appreciate.
Kurzgesagt – In a Nutshell - Great Filter
Astronauts aren't superhumans and there is nothing "special" about their training. They are just pilots with stricter physical requirements. The reason why there aren't many of them is because there is no need for more. Our technology is not there yet for cheap and "boring" space travel beyond low Earth orbit (and probably won't be for a century at least). And there isn't anything worthwhile for humanity out there anyway. At least at the current stage in our "evolution". So for now manned spaceflight programmes are just vanity projects funded by politicians (for "national pride" or whatever) or some billionaire celebrities like Musk.
Also I don't think that world peace would be necessary for space colonization. It could be born out of conflict or for economic reasons, like colonization of Americas. It's simply that it will take centuries for us to reach a point when the prospect of leaving Earth will become attractive for regular people (if we survive that much of course).