←back to thread

First images from Euclid are in

(dlmultimedia.esa.int)
1413 points mooreds | 8 comments | 21 Oct 24 20:15 UTC | HN request time: 0.97s | source | bottom
Show context
bikamonki ◴[21 Oct 24 23:55 UTC] No.41909790[source]▶
So many solar systems out there, life evolved in many planets for sure. No proof but no doubt.
replies(8): >>41909912 #>>41909966 #>>41910089 #>>41910409 #>>41911453 #>>41911920 #>>41913384 #>>41923594 #
1. ants_everywhere ◴[22 Oct 24 00:43 UTC] No.41910089[source]▶
"But where is everybody?" [0]

[0] https://en.wikipedia.org/wiki/Fermi_paradox

replies(2): >>41910987 #>>41922193 #
2. SoftTalker ◴[22 Oct 24 03:41 UTC] No.41910987[source]▶
They are all wondering the same thing. Distances are so vast that the overwhelming probablity is that we'll just never notice each other.
replies(1): >>41912647 #
3. gwd ◴[22 Oct 24 09:33 UTC] No.41912647[source]▶
How long did it take modern humans to completely colonize Earth, such that there are few places you can go on Earth and not meet any humans? Less than 10k years for sure.

If we become a space-faring civilization, how long will it take us to colonize the galaxy, such that there are few places you can go and not find evidence of humans around? Not more than a million years or so.

So if intelligent life -- capable of becoming a space-faring civilization -- is common, why is the galaxy not colonized already?

Kursgesagt has a good video on this: https://www.youtube.com/watch?v=UjtOGPJ0URM

replies(4): >>41913982 #>>41914052 #>>41914251 #>>41914361 #
4. noisy_boy ◴[22 Oct 24 13:22 UTC] No.41913982{3}[source]▶
> So if intelligent life -- capable of becoming a space-faring civilization -- is common

Maybe it doesn't have to be common; incredibly rare is totally fine when your multiplier is the entire universe.

5. darkwater ◴[22 Oct 24 13:28 UTC] No.41914052{3}[source]▶
These ideas (just like the "dark forest" concept by Liu Cixin) are based on the fact that every intelligent specie out there is driven exactly by the same instincts as ours. It can be, but you cannot be certain until you meet them. Also, meeting other species might take millions of years, so at every effect we would be safe for a loooong time anyway.
6. SoftTalker ◴[22 Oct 24 13:50 UTC] No.41914251{3}[source]▶
> how long will it take us to colonize the galaxy

The Milky Way is 100,000 light-years across. So at least that long assuming we can ever attain near-light-speed travel (unlikely). And due to cosmic inflation, many other galaxies are receeding at faster than light speed, so we could never get there.

There could be a lot of intelligent life (as intelligent as us, maybe more so) that can never realistically travel beyond their local star systems, and we'd never notice them.

7. wongarsu ◴[22 Oct 24 13:59 UTC] No.41914361{3}[source]▶
Earth has had lifeforms for about 90% of its existence. Earth has existed for 33% of the age of the universe. The time it took organisms from Earth from the earliest lifeforms to discovering space travel amounts to 30% of all time was available in this universe.

Sure, it's easy to imagine someone doing it a million years faster than us. But at the same time it's very likely we are just early to the party.

8. ySteeK ◴[23 Oct 24 05:51 UTC] No.41922193[source]▶
Not "where"... they are "there"...

But "when" they are?