The Solar System
The Inner Planets
The Outer Planets
Other objects in Solar System
Planets
100
Who discovered that the moon revolves around the Earth
Nicholas Copernicus
100
What is the closest planet to the sun
Mercury
100
What is the Sixth Planet from the Sun?
Saturn
100
What is a comet?
composed of dust and rock particles mixed with frozen Water, Methane and Ammonia
100
What is the Largest Planet
Jupiter
200
The Solar System
What is made up of Nine planets
200
What was the name of the first American spacecraft to do a mission to Mercury
Mariner 10
200
What is the name of Saturn biggest Moon?
Titan
200
What is the difference between a Meteor and Meteorite?
Meteor burns up in earth atmosphere. A meteorite strikes the surface
200
Pluto
Small icy, rock planet with thin atmosphere
300
Scientist hypothesize that the Solar System formed from what?
Nebula of Gas, Ice and Dust
300
What is Mars Red
The Red Iron Oxide in its soil
300
Large gaseous planet with at least 21 moons
Uranus
300
what is a piece of rock similar to the material that formed into the planets?
Asteroid
300
What planet has no moons and no atmosphere
Mercury
400
who discovered that the shapes of the orbits are non circular
Johannes Kepler
400
How many moons does mars have?
2
400
What planet did Voyager 1 and Voyager 2 fly past during a mission
Jupiter
400
What direction do comet tails point
Away from the sun
400
what planet has 31 moons?
Saturn
500
What are the outer 4 planets of the solar system mostly made of?
Hydrogen, Helium, Methane and Ammonia
500
the Mars pathfinder carried a robot rover named?
Sojourner
500
When was Neptune discovered?
1846
500
Who proposed the idea that billions of comets surrounded the sun?
Jan Oort
500
what planet has the highest temperature because of its greenhouse affect
Venus
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