انتشار شده در Georgia - تعاملات اجتماعی و سرگرمی - 11 Jun 2016 03:49 - 117
Earth, our home planet, is the fifth largest planet in our solar system and the only planet we know of where life exists. Even though Earth seems extremely large to us, it is actually a spec in the vast expanse of the universe. Here are 7 space facts that will make you feel very small.
1. Our sun is one of at least 100 BILLION stars, just in the Milky Way. Scientists calculate that there are at least 100 billion galaxies in the observable universe, each one brimming with stars. There are more stars than grains of sand on all of Earth’s beaches combined.
In 1995, the first planet beyond our solar system was discovered. Now, thousands of planets orbiting sun-like stars have been discovered, also known as exoplanets.
2. The Milky Way is a huge city of stars, so big that even at the speed of light (which is fast!), it would take 100,000 years to travel across it.
3. Roughly 70% of the universe is made of dark energy. Dark matter makes up about 25%. The rest — everything on Earth, everything ever observed with all of our instruments, all normal matter adds up to less than 5% of the universe.
4. If the sun were as tall as a typical front door, Earth would be the size of a nickel.
5. The sun accounts for almost all of the m in our solar system. Leaving .2% for all the planets and everything else.
6. Edwin Hubble discovered that the Universe is expanding and that at one point in time (14 billion years ago) the universe was all collected in just one point of space.
7. Four American spacecraft are headed out of our solar system to what scientists call interstellar space. Voyager 1 is the farthest out — more than 11 billion miles from our sun. It was the first object to leave our solar system. Voyager 2, is speeding along at more than 39,000 mph, but will still take more than 296,000 years to p Sirius, the brightest star in our night sky.
Don't forget to subscribe my newspaper and vote.
Credits: Nasa
تایید
iAppleHi i am a simple multiKing77King77AnanoKing77bogdiankolنظر ها (117)
voted
tnx
Good day
cool stuff
s160 v10 s4s o7
o//
svc
https://www.erevollution.com/tr/article/8403 Vote comment subscribe
1
o7 nice
nice
s172 v 27
https://www.erevollution.com/en/article/8425
ss
v !
quest
I like it 256
vot
voted
o7
o/
im in love with NASA!!! god job ^_^
777
v52
V56 + S191! o/
gfdsdfghjk
https://www.erevollution.com/es/article/7931 sub and vote #S4S
s197 v61
ccccc
Cool.
Hm..
yes
^_~
s215, v81
Svc
218/85
V
event
ო7
ო7
O7
o7
dsa
o7
o7
o7
V+s
S V C
dfvdf
o7
s250 v120
s252 v122
back sub and vote
https://www.erevollution.com/en/newspaper/2668
Vvvvvvvvvvvvssss
ooooooooooooooo
ssssssssvvvvvvvvvvveeeeeeeeee
v s
v+s+c
v+s
good
kkkkkkkkkkkkkkkkkkkkkkkkk
o7
Miracle of Allah s
nice!
o7
v