What do you get if you multiply six by nine?
That's it. That's all there is.
How many spheres are in the diagram?
Six rows of seven is 42.
Why do galaxies' shapes differ?
Just very recently, astronomers have explained the diversity of galaxy shapes seen in the universe.
Why do stars rarely collide during galactic collisions?
Because galactic collisions are not like the mechanic impact that we associate with, for example, a car collision, they are rather gravitational interactions.
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