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breadleecarter t1_jdl4ze1 wrote

This was the plot of the movie Melancholia. There was another Earth on the same orbit as ours, but we had no idea because it was always on the exact opposite side of the Sun ftom us. Until something happens and the two worlds are set to collide.

I don't have an answer to your question though, sorry.

I would THINK even if we didn't have visual confirmation, we might be able to detect an object in other ways. Asteroids making weird turns because of the gravity or something.

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whitneyanson t1_jdl6enq wrote

> This was the plot of the movie Melancholia. There was another Earth on the same orbit as ours, but we had no idea because it was always on the exact opposite side of the Sun ftom us. Until something happens and the two worlds are set to collide.

That's... not it at all.

Melancholia was a rogue (planet not in orbit of our star or any other star, but flying freely through the galaxy) gas giant (not another "Earth") that entered the solar system without being noticed at first because it entered on the other side of the Sun.

The collision happens because Melancholia enters into Earth's orbital path as it's coming through the solar system - not because it was "always on the same path."

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breadleecarter t1_jdnepqx wrote

Really? Whoopsie.

I guess I'm thinking of something else. I thought there was like a 2nd Earth where everyone had a doppelganger.

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failurebeatssuccess t1_jdlllsd wrote

It is also the plot of the 1969 UK film Doppelganger (called Journey to the far side of the sun in the US). The opposite earth in the film is also opposite in everything being a mirror image of our earth. The film is watchable, but it is certainly no 2001 and the plot is very pedestrian.

https://www.imdb.com/title/tt0064519/

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The idea is a weird one it would be extraordinarily coincidental for two planets to be locked in the exact same orbit path in different phases.

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breadleecarter t1_jdneyio wrote

I've never seen this, but this is exactly what I thought Melancholia was about. I was wrong.

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