this post was submitted on 06 Dec 2025
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Interesting, I just finished reading Rendezvous With Rama.
If a massive object like that was to pass through our neighbourhood I think it could fling planets out of the solar system.
Even with this mass this planet would have to pass one of the outer planets extremely close and quite slowly to have a chance of dragging a planet out of the solar system.
This is the same sort of idea as when galaxies merge. There is little chance of our solar system being effected in that scenario. There is just too much space to space.
Aren’t we currently galaxy merging?
2-5bn years with andromeda, not even close.
Thank you but I didn’t mean andromeda. I think heard something about merging with a dwarf galaxy or something
https://youtu.be/xZUYtRF_pw0
You are correct! Here's a really good video on the topic.
You'd think we would be able to see a dwarf galaxy approaching close to our galaxy at night? Or how dwarfey are we talking?
I don’t know why you bring up being able to see the dwarf galaxy at night as a qualifier. The dwarf galaxy I’m talking about seems to be Sagittarius Dwarf Spheroidal Galaxy
Because a whole ass galaxy should be visible, I would think, but I also asked how small we're talking — maybe it wouldn't be visible. You know?
Anyway,
Seems like it was only a near collision eons ago, but maybe it's still on a an absorption path to be consumed by The Milky Way in the future. Cool, didn't know about that.
https://youtu.be/xZUYtRF_pw0
Here is a great video talking about the dwarf galaxies around the milky way and how they have shaped and affected our galaxy.
Cool, thanks, I'll have a look 🙂
Our galaxy is capturing smaller galaxies but there won't be a merge of equal sizes for a couple billion years with andromeda.
With Andromeda, yes
Haven't even begun colliding though. We can still see it way in the distance. It's millions/billions of years away until colliding.
Imagine the night sky far in galactic future when Andromeda is like directly overhead at night. What an amazing view. Shame earth wouldn't be around to see it.
Only a few short galactic years off!
Oh god. Thanks for that midlife crisis!
Yes we are in middle of a multi million year process of merging of the bigger Andromeda galaxy and our Milky Way galaxy.
That's one of my very favorite books. It's fantastic at setting the mood. The further books are ok but not as much to my taste.
I still need to read the book! My main familiarity with RAMA is the 199(5?) PC game that was mind bogglingly obtuse with math puzzles but the world was SO fascinating! I need to figure out how to play it again with my grown up brain...
The soundtrack was INCREDIBLE...
Apparently ScummVM supports the game, though idk what's with the size of this particular upload.
There's also an audio play which was neat.
Oh, I absolutely loved all of them, but it's def a different kind of sci-fi (less human-techy) compared to the first book.
I love that whole series, amazing books!!
But yes, this simp is basically a failed star that was prob flung out of some nursery.
You may enjoy Fritz Leiber's short story, "A Pail of Air", which involves the Earth being ejected.
https://www.gutenberg.org/ebooks/51461