The Sun
Our sun is really just a what?
The closest star
The brightness of a star corrected for distance is called what?
Absolute magnitude
The distance light can travel in a straight line in one year is called what?
A light year
Groups of galaxies form what?
What is the most common type of star: main sequence, white dwarfs, red giants, or supergiants?
Main sequence
The majority of the sun is made up of what gas?
The brightness of a star as seen in the night sky is called what?
Apparent magnitude
Groups of stars is called what?
A galaxy
Galaxy clusters group together to form giant groups called what?
What is the 2nd most common type of star: main sequence, red giants, white dwarfs, or supergiants?
The center of the sun is called what?
The core
What type of star is our sun: main sequence, white dwarf, supergiant, red giant?
The Milky Way
What is the name of the arm where our solar system is located?
Orion arm
On the H-R Diagram, which stars are the hottest, the ones in the red zone or in the blue zone?
Blue zone
When nuclei fuse to make a bigger nucleus, it is called what?
Nuclear fusion
When a star explodes and fades away permanently, it is called?
What type of galaxy is the Milky Way: spiral, elliptical, lenticular, or irregular?
Spiral
Two stars that are so close they actually orbit each other are called what?
Binary stars
Every star you see in the night sky is bigger or smaller than our sun?
Bigger
When a large nucleus splits into smaller nuclei, it is called what?
Nuclear fission
The debris leftover from a supernova explosion is called a what?
Nebula
The Milky Way is part of a small group of about 30 galaxies, which is called what?
The Local Group
What is the name of the nebula that was recorded as exploding in 1054 and still seen today?
Crab nebula
Who is the current highest paid Hollywood star (male)?
Dwayne Johnson (The Rock)