How long does it take the moon to go around earth?
it takes 27.3 days
100
How many asteroids is the asteroid belt?
more than 750,000 asteroids
100
What is a comet?
comets are icy rock going around the sun with big,gassy tails
100
What is a black hole?
A black hole is a place in space where gravity pulls so much that even light can not get out.
100
About how old is earth?
its about 4.5 billion years
200
How long does it take Saturn to go around the sun?
it would take 29.5 years
200
About how many meteoroids fall on earth each year?
About 36 and 166 meteorites
200
What is the different between an asteroid and a meteoroid?
1)A small particle from an asteroid or comet orbiting the Sun
2)A meteoroid that is observed as it burns up in the Earth's atmosphere – a shooting star
3)A meteoroid that survives its passage through the Earth's atmosphere and impacts the Earth's surface.
200
What is a supernova?
A blindingly bright star bursts into view in a corner of the night sky
200
What is nuclear fusion?
A nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy.
300
How long would it take to go for earth to Uranus?
it would take about 9 and an half years.
300
How many moons are in the solar system?
There are 168 moons
300
About how far is Neptune from the sun?
its about 2,798,000,000 miles from the sun
300
What is the big bang theory?
the theory on the universe was made/ a huge explosion that made the universe?
300
What is gravitation?
Its the attractive force between any two objects in the universe
400
How long is Pluto' revolution and rotation?
its revolution is 247.92 years and its rotation is 6.39 days
400
How many stars are in the Milky way galaxy?
there is 300 billion
400
Which planets gravity is strong earth's/mars's
Earth's is
400
What is the different between Jovian and terrestrial planets?
Terrestrial planets are planets that are dense and rocky, with a solid surface (small). Jovian planets are large, gaseous, and do not have an easily definable surface.
400
What is the sun's mass?
Its about 330,000,000 kg
500
How long did it take for the solar system to form?
it took about 5 billion years
500
About how many galaxies are in the Universe?
There are about 100 to 200 billion galaxies in the Universe
500
Why is Pluto known as a dwarf planet?
because Pluto is smaller than other planets
500
What is eccentricity?
it's a measure of how much the shape of the orbit differs from a perfect circle