Why we haven't found aliens (pt 1)

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This theory has keeping me up at night.

With over 10 billion earth-like planets within the Milky Way, you’d think we would have found some life out there… right!? Well, a scientific theory called the "Great Filter" might explain why. But it has some uncomfortable implications...

#shorts #alien #science

Cleo Abram

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"Either we are alone in the universe or we are not. Both are equally terrifying." ~Arthur Clarke

nahommerk

I like the idea that because we’re millions of light-years away, aliens looked into their telescopes and saw GIANT DINOSAURS ROAMING EVERYWHERE and said “we’re going to study this one from afar”

legoverse

Grabs a handfull of ocean water: "Nope. No fish here"

metalneandertal

I imagine the "great filter" is immortality because lets face it it'd take way too long to travel through space as a mortal creature you'd have to have generations be born and die on a trip in order to accomplish anything not to mention wear and tear on equipment means space ships could just tear apart before reaching most destinations which also rules out robots carrying on the torch for us. So unless some sort of portal shortcut in physics is discovered travel throughout the universe is pretty much impossible.

thenerdbeast

I like Calvin and Hobbes' take on it: "The surest proof we have that there is intelligent life out there is that none of it has tried to contact us."

ndknight

Universe is so large that millions of intelligent life forms can exist, but be so far apart that they each believe they are alone in the universe.

JasonB

I can imagine aliens checking up on us to see how advanced we are.

"You guys are still burning coal? We'll check up on you later"

reallymakesyouthink

The big assumption is that all life evolves like we do… just because we haven’t seen it doesn’t mean it isn’t out there.

karenellis

Two words: time and distance. Folks just don't get -- really GET, deep down -- how vast space is, how slow the speed of light is in comparison, and time at cosmic scale. Intelligent life probably rises and falls all the time, but the odds of it happening at the same time and for that life to be close enough to detect each other and figure out how to communicate are literally astronomical. It's like what's happening with Betelgeuse. The dimming and flaring we're seeing actually happened 642.5 years ago, but we're only seeing it now because light is so pokey. If the star went nova today, we wouldn't know until 2665. The nature of the space-time continuum itself is the real filter.

CantankerousDave

I like to imagine that aliens have enough of their own problems to deal with us right now

FalloutUrMum

I remember a discussion where a scientist basically said that we have explored the equivalent of a glass of water in an entire ocean and so for the time being all we have to look upon is that glass of water to determine if life exist outside of our solar system...

EvilZ

I like the reason given in one of the Star Trek episodes with the traveller where he is asked, why have you never visited us before in the past. His answer was you simply weren’t interesting enough LOL

SeanGarrett-yx

Great Filter: Species must overcome its own greed, and not destroy its own habitat.

aprilmg

I like Hank Greens idea that if a species gets advanced enough to know how to explore the stars, they learn its more important to just be happy, and don't.

apollo