Obwohl die Erde voller Leben ist, könnte sie aufgrund reiner Geometrie und Beobachtungseinschränkungen tatsächlich vor einem Großteil der Galaxie „versteckt“ sein.
https://hive.blog/space/@kur8/earth-a-well-hidden-planet
Obwohl die Erde voller Leben ist, könnte sie aufgrund reiner Geometrie und Beobachtungseinschränkungen tatsächlich vor einem Großteil der Galaxie „versteckt“ sein.
https://hive.blog/space/@kur8/earth-a-well-hidden-planet
9 Kommentare
Our atmosphere has been roughly the same for the past 500 millions years and we’ve orbited the whole galaxy twice during that time. That leaves plenty of time and opportunities for anything out there with our current technology level to discover us
That’s a big plus if the dark forest theorists are right.
Is there a reason why this sub does not allow discussion of the current discussions happening in the US congress with regard to this matter? I would love to talk about this topic but it seems rather hush hush.
I believe this has been pretty well known, as many planets as we’ve found with Kepler and the transit method in general, we can decude that we’ve missed many more because they just don’t transit.
That’s why astronomers are looking into direct imaging technology to get around that. JWST, Nancy Grace Roman, ELT, and others can or will be able to directly image planets with better accuracy than in the past, and ELT may be able to image rocky planets like Earth.
So if we can do this today, or in the near future, it’s not unlikely for advanced civilizations spanning their solar system, if not beyond, to employ similar methods, with greater ease and accuracy than we could get. Trying to tie fermi paradox solutions to the limitations of current technology does not work, because those limitations will be overcome eventually.
Surely the transit method isn’t the last word in planetary detection. It’s basically the first method humans have developed for observing planets in other solar systems, and it seems very unlikely that it will be the last. If an alien civilization is still looking for planets using the transit method, they are probably like us and do not have the ability to confirm the existence of life on a far away planet anyway, let alone the capacity to visit or communicate with that planet.
To the article’s credit, the author does make note of this point, stating „advanced civilizations could use alternative methods such as direct imaging , gravitational lensing, or atmospheric biosignature detection to identify us.“
They’re lucky. They don’t have to put up with this.
That’s assuming we know what methods they use, which we don’t
so by corollary, other planets teeming with life could be very well hidden from earth in such a way that human species will get extinct before discovering any other life in our own milky way.
So if an alien pointed their telescope directly at us, they’d see nothing out of the Oort-inary?