Artist’s impression of stars born in winds from supermassive black holes
Read more at: Explorando o Universo
NASA Travel Posters: Visions of the Future
Behemoth Black Hole Found in an Unlikely Place by NASA Goddard Photo and Video
Venus, Callisto (Jupiter’s moon), Neptune
what if...................... i was chilling............ and then a tumblr infographic said only 8% of all the planets that will ever exist have already been formed and earth is one of them there are 92% more planets to exist we're not alone we're just first we're not alone we're just early if the entire universe was 100 planets we would be in the first eight and the other ninety-two don't exist yet new planets will be born as ours becomes a faded memory to the vast expanse of the universe we're not alone we're just early our entire existence is a smear on the windscreen of the cosmos the universe is unimaginably big but unimaginably small compared to what it will be we're not alone we won't be alone we're just early
The horizons of Venus, Earth, Moon, Mars, and Titan.
Source: http://i.imgur.com/A1gIYXdl.jpg
first off: I just chose this title so you would read this post… what I really mean is all extraterrestrial life, microscopically small, big, existing and non-existing.
Are we alone?
Right now it is assumed that most stars in our galaxy have at least 1-2 planets. This would mean that there are more planets than stars in our galaxy. With an estimated 100-400 billion stars, you do the math…
Data from the Kepler Space telescope reported in 2013 that there may be about 40 billion planets in their stars’ habitable zone in our galaxy. we also found evidence that there were already first traces of life on Earth shortly after it began cooling. this suggests that it is very easy to start life (as we know it) on a planet, even if it leaves no traces.
So, if life is that easy to create, why don’t we see aliens?
the conditions to create life might be common to exist, but for them to last long enough to create intelligent life…
the field of exoplanets is very young. we have just recently discovered how to properly measure that they exist, and where.
image if you have a street light shining outside and there’s a single mosquito flying around it… kinda hard to spot even if you look closely.
Ok, so other planets are hard to see. But why don’t we hear from aliens through radio waves?
this question is often asked and has several assumptions:
aliens are exactly like us, and have the same senses and shape and form
aliens are currently as evolved as we are and have developed the same technologies
aliens are trying to contact other worlds
these assumptions already give you the answer: the odds are just like, really fucking small. alien life might be entirely, incomprehensibly different. they might have sent signals 40 000 years ago when we were still gathering berries. they might send signals in 400 years when we have nuked each other to death. they might be communicating entirely different. humanity is just really not that advanced and we haven’t been around for very long. especially, we haven’t been listening for very long.
space is VAST. for another civilization to find our radio waves, they could only be 100 light years away and would have to point directly at us. like… imagine.
why haven’t we be visited by aliens?
s.a.: space is VAST. imagine how far a single light year is. visualize. a light year is the distance light travels in a year. light speed is 300,000 kilometers per ONE second. that means that in a year, light travels about 9 trillion kilometres.
my point is that it is impossible to travel at light speed and incomprehensibly difficult to even reach a couple of percent of light speed.
the closest “habitable planet” (tbh, that means shit. a habitable planet might still be a roaring fireball where it rains acid, we don’t fuckin know) is 14 light years away.
the chances of a civilization to find us, want to visit us, have a space ship that supports their form of life for decades, maybe centuries or millennia, they don’t kill each other in that time frame… y’all.
summary: intelligent life and simple life might exist but also might not exist. they might care about us or they might not. they might be so advanced that they are watching us sending rockets to each other countries and bombing each other and were like NOPE. they might be so different from us that we can’t “hear” each other. also watch this video.
overall the situation is fucked or they’re assholes and are like “fuck you”
andrei, he/him, 21, made this at 14 when i was a space nerd but i never fully grew out of that phase so,,,,..,hubble telescope + alien life + exoplanet + sci fi nerd
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