The Milky Way grew through merging with many smaller galaxies. What are the observational signatures of this process? O The motion of old stars in the bulge and halo of our galaxy are randomly orientated, meaning they were formed from collisions of small, accreted, galaxies all on different paths. O The ordered motion of the bulge / halo stars means that they came from many objects. O The random motions of stars in the disk means it was formed from collisions of small, accreted, galaxies. O The motion of young stars in the disk are all in the same direction, meaning they came in as seperate objects.

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The Milky Way grew through merging with many smaller galaxies. What are the observational signatures of this process?
O The motion of old stars in the bulge and halo of our galaxy are randomly orientated, meaning they were formed from collisions of small,
accreted, galaxies all on different paths.
O The ordered motion of the bulge / halo stars means that they came from many objects.
The random motions of stars in the disk means it was formed from collisions of small, accreted, galaxies.
O The motion of young stars in the disk are all in the same direction, meaning they came in as seperate objects.
Transcribed Image Text:The Milky Way grew through merging with many smaller galaxies. What are the observational signatures of this process? O The motion of old stars in the bulge and halo of our galaxy are randomly orientated, meaning they were formed from collisions of small, accreted, galaxies all on different paths. O The ordered motion of the bulge / halo stars means that they came from many objects. The random motions of stars in the disk means it was formed from collisions of small, accreted, galaxies. O The motion of young stars in the disk are all in the same direction, meaning they came in as seperate objects.
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