Joined: Oct 2009 Posts: 41 Location: Los Angeles, California
The Universe in perspective: The region of space simulated was a cube with about 2.4 billion light years as its length (less than 1.5% of the OBSERVABLE universe)! This volume was populated by about 20 million "galaxies". A super computer, located in Garching, Germany, executed the simulation code for more than a month. The output of the simulation needed about 25 Terabytes for storage.
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1 Mpc = 3,261,636.26 light years e.g. The Andromeda Galaxy (our nearest neighbor galaxy) is 0.77 Mpc away from the Earth.
Each dot is a galaxy like our own Milky Way galaxy:
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Life on Earth and in the universe in perspective: -Life has been on this planet for* 3.7 billion years and humans have been on this planet for only 200,000 years, which means we make up only 0.0054% of life's history on earth.
-Earth's total mass is ~5.9736×10^24 KG while the total biomass on Earth is ~7×10^13 KG, which means the percentage of life on earth is 0.00000000117% (majority of Earth's biomass resides undersea sustained by the heat of Earth's core and not the Sun's radiation).
-The solar system's* total mass is ~1.98892×10^30 KG while earth's mass is ~5.9742×10^24 KG, which means the earth makes up 0.0003% of the solar system.
-The Milky Way galaxy has a mass of ~200 billion solar masses which means our solar system makes up only 0.0000000005% of the Milky Way galaxy.
-The known universe is composed of less than 2% baryonic matter (matter consisting of protons, neutrons, and electrons... the stuff we, the earth, solar system, and galaxy are made of), which makes dark matter the most common form of matter in our universe and shows that our universe is far more suited for the creation of black holes.
-Our Sun is a third generation star, meaning the previous stars could of collapsed the wrong way and never of made the Sun and our solar system, therefore we never existing. And this isn't uncommon, by our standards the majority of star systems are failed star systems.
-Most (95%) of the "normal" baryonic matter in the universe is in the form of multi-million-degree "hot cluster gas" that forms an intergalactic medium in clusters of galaxies. So in the Universe as a whole, there is 20 times as much hot intergalactic plasma as there are stars. Stars are an accident.
Your life in perspective: In a 70 year lifetime (70 orbits around a ball of hydrogen) the average human heart beats 2.52 billion times. 70 years = 37,000,000 minutes = 614,000 hours. Code: Select all
(your heart pumps iron, and iron comes from the core of stars... dead stars)
Yeah, basically the universe is awesome, but it doesn't care if you exist.
Last edited by Beethoven on Sat Oct 03, 2009 6:05 pm, edited 3 times in total.
The universe is infinite. It will keep expanding forever. The thing is light does not travel fast enough for us to see the expansion. So what we see today actually happened a long, long time ago (millions of years) at the place you are observing (kind of like how it takes 8 minutes or so for the light from the sun to hit earth, but on a much more grand scale).
The universe is infinite. It will keep expanding forever.
If smt could expand => It has a limit, an edge => the universe is finite => you contradict yourself.
On topic: it's as big as your imagination is
Actually if the universe is infinite it is, because it will expand forever but it does have a limit at one time but then another the edge isn't there, it is a very confusing event. But some scientist say the universe expands and contracts over time, we just don't know yet
once humans invent lightspeed engines it will be a long time until we conquer even our galaxy.
and those morons who say life exists only on earth need to go back to 9th grade. There is no way that among 10000000000000000 stars there isn't a planet that has similar characteristics as earth and has living things on it
once humans invent lightspeed engines it will be a long time until we conquer even our galaxy.
and those morons who say life exists only on earth need to go back to 9th grade. There is no way that among 10000000000000000 stars there isn't a planet that has similar characteristics as earth and has living things on it
i doubt humans will ever be able to invent an engine that can go at the speed of light let alone the human body even being able to handle such speeds
if ever it's possible to travel great distances, it would somehow have to be done with a wormhole/instant point-to-point, though making that into reality sounds even more ridiculous than a piece of machinery capable of light speed
Joined: Jan 2007 Posts: 9841 Location: US - Illidan
Sav wrote:
Jstar1 wrote:
once humans invent lightspeed engines it will be a long time until we conquer even our galaxy.
and those morons who say life exists only on earth need to go back to 9th grade. There is no way that among 10000000000000000 stars there isn't a planet that has similar characteristics as earth and has living things on it
i doubt humans will ever be able to invent an engine that can go at the speed of light let alone the human body even being able to handle such speeds
people said the same thing about the modern monorail....
Everything that humans can imagine is a possibility in reality....
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once humans invent lightspeed engines it will be a long time until we conquer even our galaxy.
and those morons who say life exists only on earth need to go back to 9th grade. There is no way that among 10000000000000000 stars there isn't a planet that has similar characteristics as earth and has living things on it
i doubt humans will ever be able to invent an engine that can go at the speed of light let alone the human body even being able to handle such speeds
if ever it's possible to travel great distances, it would somehow have to be done with a wormhole/instant point-to-point, though making that into reality sounds even more ridiculous than a piece of machinery capable of light speed
no I think humans can invent such an engine. Just takes a lot of time. The only problem is about time becoming slower as you go faster away from the earth or that theory of relativity that einstein thought up. So you could travel at lightspeed for a year and then come back to earth and it will be like 100 years later and everyone you knew are dead
once humans invent lightspeed engines it will be a long time until we conquer even our galaxy.
and those morons who say life exists only on earth need to go back to 9th grade. There is no way that among 10000000000000000 stars there isn't a planet that has similar characteristics as earth and has living things on it
i doubt humans will ever be able to invent an engine that can go at the speed of light let alone the human body even being able to handle such speeds
people said the same thing about the modern monorail....
Everything that humans can imagine is a possibility in reality....
nvm...updated in a while
Last edited by Sav on Sat Oct 03, 2009 8:30 pm, edited 2 times in total.
The universe is infinite. It will keep expanding forever.
If smt could expand => It has a limit, an edge => the universe is finite => you contradict yourself.
On topic: it's as big as your imagination is
Actually if the universe is infinite it is, because it will expand forever but it does have a limit at one time but then another the edge isn't there, it is a very confusing event. But some scientist say the universe expands and contracts over time, we just don't know yet
Like gaige said, its confusing. if you were to go to the so called edge, and tried to touch it like you would touch a wall that defines a room, the universe would expand to fit your finger, so it really it has no boundries.
I took astronomy last year and its kind of a shame that i cant remember how to explain this more clearly. Like gaige said its really confusing.
there is actually "nothing" and this ironically is a pretty tough concept to grasp.
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Peace is a lie, there is only passion. Through passion, I gain strength. Through strength, I gain power. Through power, I gain victory. Through victory, my chains are broken.
Travelling at light speed is currently thought to be simply too dangerous since our current laws of physics break down and so do our bodies.
Another issue is just how well do we know the universe. I've thought about it before, but here's a good analogy. Say instead of a 4d world which we live in, such as up/down, left/right, forward/back, and time, we lived in a 3d world. Let's take away our up/down. Basically we would be living on a piece of paper. Now say the paper extends for what seems like forever. We could travel along it at the speed of light, but even than that could take millions of years to get there, even with time dilation. Now if we had the ability to go 4d, we could just wrap the infinitely long paper around and jump around from one point to the next.
In order to fully conquer space, I think we truly need some new physics that will allow movement in a whole new dimensions. Anything in our current understanding is too primitive. True instant transmission.
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Travelling at light speed is currently thought to be simply too dangerous since our current laws of physics break down and so do our bodies.
I understand that traveling at light speed is impossible, though you are right, the sheer speed should rip apart anything we can build today.
FYI to everyone else: Nothing goes faster than light. Sorry, no hyperspace.
even if we humans were able to find a way to travel at the speed of light (or faster), it still won't get you far from Earth, it would take you something like 100k years traveling at that speed just to cover the distance between one end of the milky way to the other and let alone visiting our nearest neighboring galaxy, Andromeda, which is 2.5 million years away.
as said, dimensional travel will probably the only possible solution (as far as it would be known upto now)
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