Why did the halo stars not end up in the galactic disk-- A-These stars.docx

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Why did the halo stars not end up in the galactic disk?? A.These stars formed from parts of the collapsing cloud before all the material settled in the disk; halo stars can easily pass through the disk without them getting stuck in it B.They will eventually, but it is a process that takes at least a billion years. Not enough time has passed yet since the formation of our galaxy C.They were part of the disk in the past, but gravitational encounters (near collisions) with other stars have swung them outwards D.They actually are part of the disk, but of the thin layer above and below us E.Halo stars are stars that joined our galaxy following galactic cannibalism, well after the disk had formed? Solution The correct option is A. Part of the galactic disk is a stellar component and part is a gaseous component.The halo stars are formed from this gaseous component. .

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