Famous Astronomers
Galaxies
The Moon
Comets,
Asteroids,
Meteroids
Random
100
Which Astromner was the first to start using the telescope?
Galileo
100
Large groups of stars,dust,and gas are called what?
Galaxies
100
What is the moom?
A natural satelite
100
What makes up comets?
Ice,rock,and cosmic dust
100
What fraction of earth's gravity is on the moon?
1/6
200
Which Astromner was the first to make laws of gravity?
Isaac Newtown
200
The main 3 types of galaxies are called what?
Spiral,Elliptical,Irregular
200
When did the moon form?
4-5 billion years ago
200
What is an asteroid?
A small rocky body that revolves around the sun
200
Why would a comet head for the sun?
The gravity of a passing planet or star disturbs part of this cloud.
300
Which Astromner was the first to prove that all the galaxies exist beyond the Milky Way?
Edwin Hubble
300
What fraction of all galaxies are Elliptical galaxies?
About one-third
300
How are craters on the moon formed?
Most formed from meteorite
300
What is a meteoroid?
A small rocky body that travels through space
300
Which astronomer used tools to make the most detailed astronomical observations?
Tycho Brahe
400
Which Astromner believed that all the planets revolve around the earth?
Ptolomy
400
How do scientists estimate how many stars are in the galaxie?
By the size and brightness of the star
400
How far is the moon from earth?
About 384,000 km
400
What causes meteor showers?
Earth passes through the dusty debris comets leave behind
400
What are the four main shapes of the moon?
Full, cresent, quarter gibbus
500
Which Astromner believed that all the planets revolve around the sun?
Copernicus
500
What do Spiral galaxies have that other galaxies do not have?
Spiral galaxies have a bulge in the middle and Spiral arms
500
How many days does it take for the moon to complete 1 rotation?
27 and 1/3 days
500
What is an asteroid belt?
A region of space between the orbits of Mars and Jupiter in which asteroids orbit
500
What type of galaxy do scientists believe we live in?
Spiral
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