[Music]
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