25 SCARY But True Space Facts

 

in space no one can hear you scream or can they sometimes the universe serves up some pretty horrifying scenarios lucky we're safe here on earth right welcome to fact nominal and we're showing you just how terrifying the universe can be in 25 scary but true space facts 25. galactic cannibalism straight out of a 70s b great horror it's not just people that eat each other there are many cases in the universe where a galaxy can collide with another one or multiple galaxies research has found that larger galaxies collide with smaller ones every eight to nine billion years our universe is on track to collide with the andromeda galaxy in about four billion years almost certainly destroying all life forms in our galaxy just something to look forward to 24 no sound in space contrary to what many hollywood films may have you believe there is no sound in space due to there being no particles for sound to bounce off space is completely silent the only exception would be if you were in the middle of a fairly dense gas cloud it's so quiet if you were able to float through space unaffected by the radiation extreme cold and lack of oxygen the silence would drive you mad 23 rogue planets sometimes planets like to go rogue and escape the gravity of their parent stars this doesn't sound too scary until you learn that these planets can be 12 times the size of jupiter rocketing through space at 30 million miles per hour at some point one of these planets may collide with earth and it goes without saying it will be pretty catastrophic 22 loose skin falls off in space this fact may scare the germaphobes of the world

 it turns out after a month in orbit chunks of your feet start falling off calluses and dead skin just start floating off your foot after a while yeah no thanks 21 the biggest planet in the universe jupiter is the biggest planet in our solar system but is dwarfed by the size of the largest planet astronomers have found in the universe the dennis p planet is about 28.5 times the mass of jupiter it's currently classified as a gas giant like our jupiter but many astronomers suggest it should be classified as a brown dwarf star because of its massive size 20. the hottest and brightest supernova a supernova occurs when a star dies and explodes expelling an enormous amount of light heat and radiation the assassin 15 lh is the hottest and most luminous supernova astronomers have ever found at current measurement the explosion reached about 100 billion kelvin for comparison earth's temperature is about 288 kelvin it also shown at a brightness of 570 billion solar luminosity about twice as bright as any other of the supernovas discovered so far 19 floating space corpses in the early days of space travel many animals including cats dogs and a chimpanzee were sent up to the great unknown some of these animals and some humans didn't make it back joining the thousands of tons of space junk hurling around our planet and if that's not creepy enough without oxygen bodies don't decompose so this means space is littered with floating frozen corpses 18 white hole theoretically it is possible for white holes to exist in space they're the opposite of black holes and that nothing can enter into a white hole from the outside everything including light can escape from them there are theories that every galaxy has a supermassive black hole at its center and every supermassive black hole spawns a white hole 17.

 what happens when you fall into a black hole we've all heard of black holes but what would happen if you were to fall into one there are only theories as to what would happen one theory is that it may split your reality into two parts in one part you'll be spaghettified and killed immediately and in the other you're unharmed this is because time doesn't work the same near black holes as on earth either way i wouldn't try it if i were you 16 the big crunch it is theorized that opposite to the big bang which started the universe it may end with the big crunch this theory suggests that the universe will start to shrink and collapse to its earliest state the big rip theory suggests the universe won't stop expanding and at one point everything will be torn apart at an atomic level sounds like fun 15 the dark flow one minute you're a galaxy chilling at the edges of the universe the next you are sucked into who knows where a phenomenon called the dark flow keeps pulling chunks of galaxies into unknown places

 and we don't know why it's very reassuring 14 unexpected meteors in 2013 400 people were injured after a meteorite exploded in russia as it turns out meteors can just fall at any moment and rain down on earth causing massive destruction and we might not know until it's too late sometimes the sky really is falling thirteen the moon will leave us every year the moon gets four centimeters farther away from the earth this doesn't sound like a big deal but it could have devastating effects in the distant future implicating tides water levels and potentially slowing down the speed of earth's rotation 12.

 venus is dangerous while mars is seen as somewhat inhabitable by humans one planet we definitely won't be visiting soon is venus as it turns out the surface temperature is around 500 degrees celsius its atmospheric pressure is 90 times that of earth and it's constantly raining down acid rain so i don't think it will be a popular holiday destination once we get the technology to go there the death of our solar system we've looked at theories of how our universe will end but what about our solar system one day when the sun's hydrogen is gone it will expand into a red giant and consume our solar system destroying it completely better pack that spf 4 billion 10.

 space without a spacesuit if you ventured out into space without a suit you would last at most 15 seconds before losing consciousness from lack of oxygen that's if you're lucky if you don't expel all the air from your lungs you will die within seconds from the vacuum rupturing your lung so if you find yourself floating through the vastness of space without a space suit i wouldn't hold my breath 9 celt 9b celt 9b is the hottest planet we have found outside our solar system its surface temperature is about 4 600 kelvins just shy of 5800 kelvin temperature of our sun this planet gets its red hot summers

 from its close orbit to its parent star kelt 9. eight the average temperature of space

 scientists have worked out that the net

 temperature of space is essentially zero to be precise it is around minus 270 degrees celsius or minus 454 degrees fahrenheit that comes out to 2.73 kelvin with the absolute zero or the coldest physical temperature possible being zero kelvin seven the night sky will get dark forever go outside at night and you'll find a sky full of stars most of the time however this may not always be the case according to various scientists in a matter of a trillion years from now the sky at night will go totally black forever six even if there are aliens we may never find them with the trillions and trillions of stars in the universe most of which contain planets it's almost impossible that there are extraterrestrials out there somewhere however we haven't found them yet and we might never find them this is because galaxies are moving away from each other meaning without faster than light travel intergalactic exploration may not be possible 5. solar

 superstorms solar superstorms rising loops of electrified gas reaching 100 000 kilometers high could wipe out earth's communication

 satellites and disrupt aircraft technology we are due for one soon too as they occur once every one or two hundred years with the last one hitting earth in 1859. might want to get a faraday cage for your cell phone just in case 4. survival rate of space out of 430 people who have gone to space 18 have never made it home that is a pretty bad survival rate making space travel the most dangerous mode of transportation so far still space travel is becoming much safer than it used to be three dark matter we have only witnessed less than five percent of the matter the universe is made of the other 95 being dark matter and dark energy that we cannot see or understand yet so until we figure out what dark matter is all about there is still so much to learn about the material makeup of the universe 2. rogue black holes if the rogue planets didn't sound scary enough there are rogue black holes as well in fact astronomers have found such a jupiter-sized black hole present in our galaxy i wouldn't worry though it's only speeding through space at about 3 million miles per hour 1. quasars quasars are some of the most powerful celestial objects we currently know of these celestial objects are found at the center of many active galaxies and are the most powerful energetic and luminous objects we know of one quasar emits more than a thousand times the energy of our milky way