Which is a mark of a galaxy formed by collapse?(1 point) Responses same age stars same age stars a mix of young and old stars a mix of young and old stars uniformly young stars uniformly young stars abundant gas and dust
abundant gas and dust
How do astronomers know about the future collision of Andromeda and the Milky Way?(1 point) Responses The Milky Way has changed course to head toward Andromeda. The Milky Way has changed course to head toward Andromeda. The two galaxies have collided previously. The two galaxies have collided previously. All galaxies will collide at some point. All galaxies will collide at some point. Astronomers have observed their movements over time.
Astronomers have observed their movements over time.
When parts of a gas cloud collapse, where does the material first form clumps?(1 point) Responses in less dense regions with more space between atoms in less dense regions with more space between atoms in less dense regions with little space between atoms in less dense regions with little space between atoms in denser regions with more space between atoms in denser regions with more space between atoms in denser regions with little space between atoms
in denser regions with little space between atoms
Which factors are most likely to affect whether a galaxy will evolve by merging with a second galaxy? Select the two correct answers.(1 point) Responses its size compared to that of the other galaxy its size compared to that of the other galaxy its distance from the other galaxy its distance from the other galaxy its age compared to that of the other galaxy its age compared to that of the other galaxy its proportion of gas compared to that of the other galaxy
its size compared to that of the other galaxy
its proportion of gas compared to that of the other galaxy