# Expansion of the universe

**URL:** https://boards.straightdope.com/t/expansion-of-the-universe/969551
**Category:** Factual Questions
**Created:** [August 12, 2022, 12:16pm UTC](https://boards.straightdope.com/t/expansion-of-the-universe/969551 "2022-08-12T12:16:31Z")
**Posts on this page:** 2
**Page:** 2

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### Author: ![Exapno\_Mapcase](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/exapno_mapcase/32/1051_2.png) [@Exapno\_Mapcase](https://boards.straightdope.com/u/Exapno_Mapcase)
#### Post date: [August 13, 2022, 5:18pm UTC](https://boards.straightdope.com/t/expansion-of-the-universe/969551/21 "2022-08-13T17:18:26Z")

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> [@Chronos](#):
>
> It’d be quite extraordinary if the Solar System didn’t survive intact with the Sun being hurled out of the Galaxy.

Can you expand on this? I’d expect that whatever was strong to send the Sun out of the galaxy would also be strong enough to greatly perturb each planet’s orbit.

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### Author: ![Andy\_L](https://avatars.discourse-cdn.com/v4/letter/a/c67d28/32.png) [@Andy\_L](https://boards.straightdope.com/u/Andy_L)
#### Post date: [August 13, 2022, 5:32pm UTC](https://boards.straightdope.com/t/expansion-of-the-universe/969551/22 "2022-08-13T17:32:53Z")

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Unless the object(s) rhat perturb the Sun are **very** close to the Sun, their effect on a planet will be near identical to their effect on the Sun, leading to a miniscule relative perturbation- and its the relative perturbation that would cause a planet to be stripped away.

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