Stars
This is the distance that light travels in a year.
What is a "Light Year"?
These are planets that orbit a star beyond our solar system.
What is extrasolar?
These are the groups of galaxies that includes the Milky Way and another spiral galaxy, M31.
What is a Local Group?
Since the extrasolar planets are so difficult to see, what is an easier way to find them?
What is "look for motion in the star as the planet orbits it?
Do the stars in a cluster orbit around a common center of mass? Yes or NO?
Yes!
What is a parsec?
This is when a smaller body passes in front of a larger body; a type of eclipse where a much smaller body blocks out only a small portion of a bigger body's light.
What is transit?
This is how bright a star appears to be to us.
What is apparent magnitude?
The more mass a star has, does it move more or less?
What is less?
This is how big is the diameter of the Milky Way.
What is absolute magnitude?
This is the theoretical range of distance between a star and an orbiting planet that might have liquid water on the surface.
What is the Habitable zone?
This is what the color of a star tell us.
What is its temperature?
These are the two types of star clusters.
What is open and globular?
This is the kind of galaxy the Milky Way is.
What is a Barred Spiral Galaxy?
What are White Dwarf Starts?
These are groups of starts spaced much closer together than surrounding stars and held together by their gravity.
What are star clusters?
This is the most common element in the universe.
What is Hydrogen?
These are stars clusters that can have between 50,000 and a million stars.
What is Globular Cluster?
Up until 1924, what was the dominant theory on spiral nebulae?
What is Solar systems in development?
How can transit help in the discovery of extrasolar planets?
By decreasing the amount of the brightness we see.
These are thin gas and other small materials that exist between stars.
What is interstellar medium?
This is the name for the system created to measure the brightness of stars.
What is Magnitude?
These are type of star clusters that has an irregular appearance.
What is Open?
This is the nearest galaxy cluster to earth.
What is the Virgo Cluster?