The Nine Planets – Earth

earth is third in line from the Sun and

earth is third in line from the Sun and it is the largest of the terrestrial

it is the largest of the terrestrial

it is the largest of the terrestrial planets because of this fact it is also

planets because of this fact it is also

planets because of this fact it is also the largest solid object in the solar

the largest solid object in the solar

the largest solid object in the solar system the earth does not rotate around

system the earth does not rotate around

system the earth does not rotate around its axis every 24 hours but actually

its axis every 24 hours but actually

its axis every 24 hours but actually every 23 hours and 56 minutes just over

every 23 hours and 56 minutes just over

every 23 hours and 56 minutes just over seventy percent of earth is covered in

seventy percent of earth is covered in

seventy percent of earth is covered in water and just less than thirty is land

water and just less than thirty is land

water and just less than thirty is land it is estimated that only one-eighth of

it is estimated that only one-eighth of

it is estimated that only one-eighth of the earth is suitable for humans to live

the earth is suitable for humans to live

the earth is suitable for humans to live on because much as either desert or

on because much as either desert or

on because much as either desert or mountains scientist suggests that earth

mountains scientist suggests that earth

mountains scientist suggests that earth was formed 4.5 seven billion years ago

was formed 4.5 seven billion years ago

was formed 4.5 seven billion years ago the moon or luna is the Earth’s only

the moon or luna is the Earth’s only

the moon or luna is the Earth’s only natural satellite and it is one-fourth

natural satellite and it is one-fourth

natural satellite and it is one-fourth of the size of Earth itself it is almost

of the size of Earth itself it is almost

of the size of Earth itself it is almost two hundred nine thousand miles from

two hundred nine thousand miles from

two hundred nine thousand miles from Earth and makes an orbit of the earth

Earth and makes an orbit of the earth

Earth and makes an orbit of the earth approximately every 27 days the earth is

approximately every 27 days the earth is

approximately every 27 days the earth is composed mostly of iron oxygen silicon

composed mostly of iron oxygen silicon

composed mostly of iron oxygen silicon and magnesium and is the only place in

and magnesium and is the only place in

and magnesium and is the only place in the universe known to support human life

the universe known to support human life

the universe known to support human life [Music]