All the galaxies are traveling away at a great
speed.
The big bang theory of the origin of the universe was proposed by
Edwin Hubble.
The Sun is the nearest star to the earth.
Each second 600,000,000 tons of hydrogen are
converted to helium in the Sun.
According to the big-bang theory, “all the matter in the universe
was originally constructed in one micro meter”.
According to the steady state theory of the beginning of the
universe ‘’the universe is unchanging it appear the same at all time and all
points. The universe did not have a beginning and
it will not have an end.
Light ray travels at a speed of 300,000
km/second.
After Sun the nearest star is Alpha Centauri
whose distance is 4.5 light years.
Star in the sky appeared to make patterns. These
group or patterns are called constellations.
The two important galaxies in the universe
are (1) milky way (2)
Andromeda galaxy
Our own galaxy is the Milky Way.
The Milky Way galaxy is a spiral type of galaxy.
Andromeda galaxy is the closest galaxy to the Milky
Way. It is only galaxy that can be seen with the naked
eye from the earth.
Stars are formed in huge clouds of gas
and dust called nebulae.
A black hole has a very strong gravitational field.
The light from sun reaches the earth in about 8
mints.
The Sun star is 150 million km away from earth.
The mass of Sun 2×1030kg.
Composition of Sun 74% H, 25% He, and 1%
other gases.
There are 8 planets in solar system.
The nearest and smallest planet to the sun is mercury.
Its temperature about 4300C.
Earth distance from moon is 384400 km.
Second nearest planet to the Sun is Venus. Its
temperature about 4640C. Venus and earth are almost similar
in size, mass, composition, and gravity.
Third nearest planet to the sun is earth. Its
distance from sun is 150 million km from sun and its mass
is about 6×1024kg.
Mars is the forth and second smallest planet
of the solar system.
Mars has two moon called Phobos and Deimos.
Mars also called red planet.
Jupiter is the fifth and largest planet
of the solar system.
Jupiter has 79 moons. (according to new course)
Saturn is the 6th and second
largest planet of the solar system.
Saturn has 82 moons. (according to new course)
Uranus is the 7th and forth
largest planet and coldest of the solar system.
Uranus has 27 moons.
Neptune is the 8th and 3rd
largest planet of the solar system.
Neptune has 14 moons.
All the galaxies are traveling away at a great
speed.
The big bang theory of the origin of the universe was proposed by
Edwin Hubble.
The Sun is the nearest star to the earth.
Each second 600,000,000 tons of hydrogen are
converted to helium in the Sun.
According to the big-bang theory, “all the matter in the universe
was originally constructed in one micro meter”.
According to the steady state theory of the beginning of the
universe ‘’the universe is unchanging it appear the same at all time and all
points. The universe did not have a beginning and
it will not have an end.
Light ray travels at a speed of 300,000
km/second.
After Sun the nearest star is Alpha Centauri
whose distance is 4.5 light years.
Star in the sky appeared to make patterns. These
group or patterns are called constellations.
The two important galaxies in the universe
are (1) milky way (2)
Andromeda galaxy
Our own galaxy is the Milky Way.
The Milky Way galaxy is a spiral type of galaxy.
Andromeda galaxy is the closest galaxy to the Milky
Way. It is only galaxy that can be seen with the naked
eye from the earth.
Stars are formed in huge clouds of gas
and dust called nebulae.
A black hole has a very strong gravitational field.
The light from sun reaches the earth in about 8
mints.
The Sun star is 150 million km away from earth.
The mass of Sun 2×1030kg.
Composition of Sun 74% H, 25% He, and 1%
other gases.
There are 8 planets in solar system.
The nearest and smallest planet to the sun is mercury.
Its temperature about 4300C.
Earth distance from moon is 384400 km.
Second nearest planet to the Sun is Venus. Its
temperature about 4640C. Venus and earth are almost similar
in size, mass, composition, and gravity.
Third nearest planet to the sun is earth. Its
distance from sun is 150 million km from sun. And its mass
is about 6×1024kg.
Mars is the forth and second smallest planet
of the solar system.
Mars has two moon called Phobos and Deimos.
Mars also called red planet.
Jupiter is the fifth and largest planet
of the solar system.
Jupiter has 79 moons. (according to new course)
Saturn is the 6th and second
largest planet of the solar system.
Saturn has 82 moons. (according to new course)
Uranus is the 7th and forth
largest planet and coldest of the solar system.
Uranus has 27 moons.
Neptune is the 8th and 3rd
largest planet of the solar system.
Neptune has 14 moons.
The building block of the universe
is…………
a) Earth
b) Sun c) Galaxy
d) None
