Size Does Matter | National Geographic

eighty years ago we thought that the

eighty years ago we thought that the entire universe consists of what we know

entire universe consists of what we know

entire universe consists of what we know today as our Milky Way galaxy which made

today as our Milky Way galaxy which made

today as our Milky Way galaxy which made sense at the time our our Milky Way

sense at the time our our Milky Way

sense at the time our our Milky Way galaxy is a huge place our Milky Way

galaxy is a huge place our Milky Way

galaxy is a huge place our Milky Way galaxy has a diameter of 100,000

galaxy has a diameter of 100,000

galaxy has a diameter of 100,000 light-years so if you shined a

light-years so if you shined a

light-years so if you shined a flashlight from one end of the Milky Way

flashlight from one end of the Milky Way

flashlight from one end of the Milky Way traveling at 186,000 miles per second it

traveling at 186,000 miles per second it

traveling at 186,000 miles per second it still takes 100,000 years for that

still takes 100,000 years for that

still takes 100,000 years for that flashlight beam to finally reach the

flashlight beam to finally reach the

flashlight beam to finally reach the other side of our Milky Way galaxy

being so big it’s not surprising we

being so big it’s not surprising we thought our Milky Way was the universe

thought our Milky Way was the universe

thought our Milky Way was the universe but we now know that it’s only one of

but we now know that it’s only one of

but we now know that it’s only one of about 100 billion other galaxies in the

about 100 billion other galaxies in the

about 100 billion other galaxies in the cosmos so many galaxies in fact that if

cosmos so many galaxies in fact that if

cosmos so many galaxies in fact that if they suddenly turned into peas they fill

they suddenly turned into peas they fill

they suddenly turned into peas they fill a Sports Arena

and in each of these galaxies there are

and in each of these galaxies there are tens even hundreds of billions of stars

tens even hundreds of billions of stars

tens even hundreds of billions of stars all together it adds up to a universe

all together it adds up to a universe

all together it adds up to a universe with more stars than most of us can

with more stars than most of us can

with more stars than most of us can imagine how fast is space for an example

imagine how fast is space for an example

imagine how fast is space for an example that might make sense come to the beach

that might make sense come to the beach

that might make sense come to the beach think of the grains of sand and every

think of the grains of sand and every

think of the grains of sand and every handful I pick up I’ve got more than 8

handful I pick up I’ve got more than 8

handful I pick up I’ve got more than 8 million grains of sand

and all the planet we think there one

and all the planet we think there one quadrillion grains of sand

but there’s still nothing compared to

but there’s still nothing compared to space we know now that there are about

space we know now that there are about

space we know now that there are about 200 billion galaxies in each galaxy it’s

200 billion galaxies in each galaxy it’s

200 billion galaxies in each galaxy it’s home to 200 billion stars so it really

home to 200 billion stars so it really

home to 200 billion stars so it really is true the space is more vast with more

is true the space is more vast with more

is true the space is more vast with more stars than there are grains of sand on

stars than there are grains of sand on

stars than there are grains of sand on all the beaches of planet Earth

all the beaches of planet Earth

all the beaches of planet Earth that’s amazing