The milky way
Our solar system is one of the many planetary systems in this.
What is the universe?
The time it takes for the earth to make one complete rotation.
What is 24 hours?
This happens every 4 years.
What is a leap year?
Aristotle was one of these.
What is Astronomer?
This is the amount of the earth's tilt.
What is 23.5 degrees?
This is the shape of the milky way.
What is Elliptical?
The temperature at which a solid turns into a liquid.
What is the melting point?
This uses shadows to tell time.
What is a sun dial?
Ancient Egyptians believed the earth was like this.
What is flat?
The length of time it takes the moon to go around the earth.
What is 27.3 days?
This is in the center of the Milky Way.
What is a black hole?
The amount of space an object occupies.
What is volume?
The length of time it takes the earth to rotate around the sun.
What is 365.25 days?
Earth is one planet orbiting one star in this.
What is a galaxy?
This affects our seasons.
What is the earth's tilt?
The distance it takes light to travel in a year.
What is a light year?
A state of matter with a fixed volume but no fixed shape.
What is liquid?
This instrument provides the earth rotates on its axis.
What is Foucault's Pendulum?
This means the Sun is at the center, and the Earth revolves around the Sun.
What is Heliocentric?
When day and night are equal lengths.
What is solstice?
The galaxy our solar system is part of is this.
What is Orion's galaxy?
The mass of an object is divided by its volume.
What is density?
This is how the universe started.
What is the Big Bang theory?
Ancient astronomers like Ptolemy introduced this idea.
What are Epicycles?
This causes the moon phases.
What is the light reflecting from the sun?