Question

Which statements describe elliptical galaxies? Select the two correct answers.(1 point) Responses They typically contain very little gas and dust. They typically contain very little gas and dust. They include the Milky Way. They include the Milky Way. They include the universe's largest galaxies. They include the universe's largest galaxies. They are the most common galaxy type.
Answer
How does the appearance of spiral galaxies vary? Select the two correct answers.(1 point) Responses Some are more elongated in shape than others. Some are more elongated in shape than others. They vary in the brightness of stars located on their arms. They vary in the brightness of stars located on their arms. Some have a band of stars and materials through their middle, but others do not. Some have a band of stars and materials through their middle, but others do not. They vary in how tightly their arms are wound
Answer
According to astronomers, how many galaxies are distributed across the observable universe?(1 point) Responses several thousand several thousand 50 50 1 trillion 1 trillion 100 billion
Answered by GPT 3.5
The correct statements about elliptical galaxies are:

1. They typically contain very little gas and dust.
2. They are the most common galaxy type.

Therefore, the correct answers are:

- They typically contain very little gas and dust.
- They are the most common galaxy type.
Answered by GPT 3.5
The correct statements about the appearance of spiral galaxies are:

1. They vary in the brightness of stars located on their arms.
2. They vary in how tightly their arms are wound.

Therefore, the correct answers are:

- They vary in the brightness of stars located on their arms.
- They vary in how tightly their arms are wound.
Answered by GPT 3.5
According to astronomers, there are approximately 100 billion galaxies distributed across the observable universe.