Vocabulary
Consists of a star, the sun, and all other objects that orbit around the sun
What is the solar system?
The amount of planets in our solar system
What is 8?
The galaxy our solar system is in
What is the Milky Way?
The sun is this
What is a star?
This is the color of a very hot star
Primary bodies that orbit the sun or a similar body that orbits a star
What is planet?
These planets are called gas giants
What is Jupiter, Saturn, Uranus, & Neptune?
The Milky Way is this type of galaxy
What is spiral?
What is red?
The sun is this color
What is yellow?
A large celestial body that is composed of gas and emits light
What is a star?
Smaller bodies that orbit most of the planets
What are moons?
The three types of galaxies
What is spiral, elliptical and irregular?
Three or more stars that are bound by gravity
What are multiple star systems?
The actual brightness of a star
What is luminosity?
The distance light travels in a year
What is a light year?
Earth is this type of planet
What is terrestrial planet?
These galaxies look like spheres or ovals, and they do not have spiral arms
What is elliptical?
The sun is composed of mostly these two gases
To measure a star's luminosity, astronomers use this absolute brightness scale
What is absolute magnitude?
Space and all matter and energy in it
What is the universe?
This is how many moons Jupiter has
What is more than 60?
These galaxies are very active areas of star formation
What is irregular?
The measure of the star's brightness as seen from Earth
What is apparent magnitude?
The faintest stars that we can see have a magnitude of this
What is +30?