Which statements describe elliptical galaxies? Select the two correct answers.(1 point)
Responses
They typically contain very little gas and dust.
They include the Milky Way.
They include the universe's largest galaxies.
They are the most common galaxy type.
According to astronomers, there are approximately 100 billion galaxies distributed across the observable universe.
The correct component that makes up the bulk of all galaxies is dark matter.
How does the appearance of spiral galaxies vary? Select the two correct answers.(1 point)
Responses
Some are more elongated in shape than others.
They vary in how tightly their arms are wound.
Some have a band of stars and materials through their middle, but others do not.
They vary in the brightness of stars located on their arms.
According to astronomers, how many galaxies are distributed across the observable universe?(1 point)
Responses
1 trillion
50
several thousand
100 billion
Which component that makes up the bulk of all galaxies?(1 point)
Responses
dark matter
dust
stars
gas
The two correct statements describing elliptical galaxies are:
- They typically contain very little gas and dust.
- They are the most common galaxy type.
The two correct ways in which the appearance of spiral galaxies can vary are:
- Some are more elongated in shape than others.
- They vary in how tightly their arms are wound.