The Milky Way is thought to be this type of galaxy?
What is spiral?
100
The leading scientific theory about the formation of the universe in which everything began from a single explosion.
What is the big bang theory?
100
The sun is in this phase of its life cycle now.
What is the main sequence?
200
An area of the sun's surface that appears dark because it is cooler than the surrounding areas.
What is a sunspot?
200
The apparent shift in the position of an object when viewed from two different positions. This is how scientists measure the distance from Earth to nearby stars.
What is parallax?
200
Galaxies are often grouped into clusters. Name the cluster of galaxies that the Milky Way belongs to.
What is the Local Group.
200
The theory that the universe was created by on purpose by a thinking being.
What is intelligent design?
200
The measure of the amount of light a star actually gives off.
What is absolute magnitude?
300
The surface of the sun and also the layer from which light is given off.
What is the photosphere?
300
Stars begin as a large cloud of gas and dust called this.
What is a nebula?
300
The name of a galaxy that is shaped like an oval or egg.
What is an elliptical galaxy?
300
Stars outside our solar system are moving away from us because the universe is doing this?
What is expanding?
300
The layer of the sun above the transition zone. It is the largest layer, extending millions of kilometers into space.
What is the corona?
400
Huge, arching columns of gas on the surface of the sun caused by intense magnetic fields.
What is a prominence?
400
The explosion of a red supergiant is called this.
What is a supernova?
400
The approximate number of stars in the Milky Way galaxy.
What is one trillion?
400
The theory that the universe always has been the same as it is now.
What is the steady state theory?
400
How a star creates its energy.
What is nuclear fusion?
500
These occur when large amounts of electrically charged gas are ejected suddenly from the sun's corona. They can affect radio communication and they cause the aurora borealis.
What are coronal mass ejections, or CMEs.
500
Name one of the scientists who created a graph that places stars in a specific location according to their brightness and temperature.
Who are Hertzsprung and Russell?
500
This is thought to be located at the center of the Milky Way.
What is a black hole?
500
This shift in the spectrum occurs when a star is moving away from Earth.
What is a red shift?
500
The leftover hot, dense core of a star after it uses much of its helium and the outer layers escape into space.