Which conclusion is best supported by the observed velocity curve?
Arrange the galaxy types from most compact to most open in structure. Place the most compact at the top of the list.
Choose the correct answer from each drop-down menu to complete the statement.
elliptical|Sc and SBc
Determine whether each characteristics is most associated with spiral galaxies or elliptical galaxies.
Which galaxy type is most likely to have the highest star formation rate and most open spiral arms?
Determine whether each change will occur before or after the galactic cores merge.
Choose the correct answer from each drop-down menu to complete the statement.
increases|more frequent star formation
What feature in the simulation data most directly indicates when the two galaxies will form a single, merged structure?
What is the most likely cause of the structural change from spiral galaxies to a large elliptical galaxy by 5.5 billion years?
Classify each time point based on whether it represents a pre-merger, active merger, or post-merger stage in the Milky Way–Andromeda collision simulation. Drag each to the correct box.
0.0 billion years from now,1.2 billion years from now|2.6 billion years from now,3.9 billion years from now|5.5 billion years from now
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