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Galaxy Types
Types & Origins
Grab Bag
Distances
Contents of Galaxies
100
Describe the way a spiral galaxy looks.
What is a center bulge with arms spiraling from it.
100
These galaxies contain mostly old stars.
What is elliptical galaxy?
100
The word galaxy comes from a Greek word root meaning_____.
What is milk?
100
This measurement of distance is equal to the distance light travels in a year.
What is a light-year?
100
A galaxy is a collection of, stars, dust, and gas held together by this force.
What is gravity?
200
The milky way is probably this type of galaxy.
What is spiral?
200
Why do we study distant galaxies?
What is to learn what early galaxies were like or how galaxies change?
200
This scientist started classifying galaxies by shape in the 1920s.
Who is Edwin Hubble?
200
These sources of light are much farther away from Earth than the other planets are.
What are stars?
200
Nebula is the Latin word for _______, something we usually see in the sky on Earth.
What is cloud?
300
This type of galaxy is usually close to another type of galaxy and has no distinctive shape.
What is irregular galaxy?
300
Why is looking at a distant galaxy like traveling through time?
Light takes a very long time to reach the Earth.
300
What was named after Edwin Hubble?
What is the Hubble Space Telescope?
300

Unit of measurement we use to determine distance based on how far we are from our sun

What is Astronomical Unit(au)

300
This a tight group of of stars that looks like a ball and can contain up to a million stars.
What is a globular cluster?
400
This type of galaxy is a massive blob of stars and might have a shape similar to a football.
What is elliptical galaxy?
400
These very bright light sources are extremely far from Earth and are considered to be the most powerful energy sources in the universe.
What is a quasar?
400
Elliptical galaxies might be shaped like this vegetable,
What is a cucumber?
400
Stars appear small in the sky, but if we understand scale we know that they are actually much _____than Earth.
What is larger?
400
Location of our sun in Milky Way Galaxy

What is a spiral arm?

500
The shape of this type of galaxy, which is not well-defined, might be distorted by neighboring galaxies.
What are irregular galaxies?
500
Scientists think these may be at the core of young galaxies.
What is a black hole?
500
How many stars might the largest galaxies contain?
What is more than a trillion?
500
Although all the stars seem to be about the same distance from Earth when we look up at the sky, the distances actually __________.
What is vary greatly?
500

Newly formed galaxies may contain stars in this color.

What is blue?