The average distance between the Earth and the sun
What is astonimical unit?
100
The counter-clockwise spin of a planet or moon as seen above the planet's North Pole; rotation in the same direction as the sun's rotation
What is prograde rotation?
100
Planets that have deep, massive atmosphere
What is gas giant?
100
A natural or artificial body that revolves around a planet
What is satellite?
100
A small body of ice, rock, and cosmic dust that follows an elliptical orbit around the sun and that gives off as and dust in the form of a tail as it passes close to the sun
What is comet?
200
The distance light travels in a minute
What is light minute?
200
The clockwise spin of a planet or moon as seen from above the planet's North Pole
What is retrograde rotation?
200
The largest planet in the solar system
What is Jupiter?
200
The change in the sunlit area of one celestial body as seen from another celestial body
What is phase?
200
A small, rocky object that orbits the sun, usually in a band between the orbits of Mars and Jupiter
What is asteroid?
300
Another word for inner planets
What is terrestrial planets?
300
A program to study Earth by using satellites in the same way that scientists study other planets
What is NASA?
300
The planet that is tipped over on its side
What is Uranus?
300
An event in which the shadow of one celestial body falls on another
What is eclipse?
300
A bright streak of light that results when a meteoroid burns up in the earth's atmosphere
What is meteor?
400
The collection of the sun, planets, and smaller objects
What is solar system?
400
The Viking 1, Viking 2, and Mars Pathfinder landed on this planet
What is Mars?
400
The planet with a set of very narrow rings
What is Neptune?
400
The two types of eclipses
What is solar eclipse and lunar eclipse?
400
The region of the solar system that is between the orbits of Mars and Jupiter and in which most asteroids orbit
What is asteroid belt?
500
The two parts of the solar system
What is inner planets and outer planets?
500
Water is found on what two planets in the inner planets
What is Mars and Earth?
500
The 2nd largest planet in the solar system
What is Saturn?
500
The amount of moons on Mars
What is 2
500
A relatively small, rocky body that travels through space