This planet is the "3'rd rock from the sun". It has a large amount of water on its surface and is the only planet that currently has conditions which sustain life as we know it.
What is Earth?
100
This is the end stage of the stars life, after it has used up all its fuel.
Supernova
100
How many minutes does it take for the light from Sun to reach us?
8.3 mins
100
These are large bodies that orbit the sun!
What are planets?
100
This is a non-contact force that acts on objects. If two objects are placed in space, they will be drawn towards each other by this force.
What is gravity?
200
Small and recently re-classified as a dwarf planet, this is the littlest planet found furthest out in our solar system.
What is Pluto?
200
True or false: There are stars much larger than the sun.
True
200
This method is used to measure distances to objects in the solar system
Radar
200
This is a HUGE system of gas, dust, and stars. Our solar system is found at one of the far edges of it.
What is the Milky Way Galaxy?
200
This is a small, orbiting body made up of dust, ice, and frozen gases. The solid center of this is its nucleus, and like all objects in the solar system it orbits the sun.
What is a comet?
300
This is the largest planet in the solar system.
What is Jupiter?
300
All objects in the solar system travel around the sun in this kind of orbit.
What is elliptical orbit?
300
What is a light year?
distance light travels in one year
300
This is a chunk of matter that enters our atmosphere and is heated by friction with the air to the point of burning up as it falls towards the Earth.
What is a meteor?
300
In this process, the nuclei of atoms fuse together to form a larger nucleus.
What is nuclear fusion?
400
This is known as the red planet, and has shown evidence that it may have had microscopic life on it long ago.
What is Mars?
400
What elements are formed in the sun?
He
400
What is a standard candle?
Standard candles are supernovae, used to estimate distances.
400
This is the last stage of a stars life.
What is a black dwarf star?
400
This is a large rotating cloud of dust and hydrogen gas.
What is a nebula?
500
This is the 8th planet from the Sun, and is made of mostly hyrdrogen, helium, and methane gas.
What is Neptune?
500
This theory explains the beginning of everything
Big bang
500
What does AU stand for? What is it defined as?
Astronomical unit, distance between earth and Sun.
500
This is the term used to describe a star that has stabalized.
What is a main-sequence star?
500
This planet takes 163 Earth years (365 days = 1 Earth year) to orbit around the sun once!