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Bampot@lemmy.world

Citizen Scientists Spot Weird Object Careening Across the Cosmos at Ludicrous Speeds (gizmodo.com)

submitted 1 year ago by Bampot@lemmy.world to c/jingszo@lemmy.world

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Whatever it is, it’s moving fast, with what the researchers called “a unique trajectory and speed.” So fast, it appears it will eventually break free of the gravitational pull of the Milky Way and shoot off into intergalactic space

It’s not just the speed that’s unusual. The data indicates CWISE J1249 contains less iron and other metals than other observed stars and brown dwarfs, which could mean it’s a very old object, dating back to the early days of the Milky Way.

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[–] notfromhere@lemmy.ml 2 points 1 year ago (2 children)

I don’t know why they are assuming it originated in the Milky Way. It could just be passing through and it originated from another galaxy, right?

[–] VelvetStorm@lemmy.world 1 points 1 year ago (1 children)

I doubt it considering how vast the empty regions of space between galaxies are.

[–] notfromhere@lemmy.ml 1 points 1 year ago* (last edited 1 year ago)

Could it be a highly eccentric orbit from the last time the Milky Way collided with another galaxy?

https://earthsky.org/space/last-milky-way-galactic-collision/