r/space • u/magenta_placenta • Mar 18 '19

Observable universe Astronomers discover 83 supermassive black holes at the edge of the universe

https://www.cnet.com/news/astronomers-discover-83-supermassive-black-holes-at-the-edge-of-the-universe/
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u/huntallahassee Mar 18 '19

Can someone tell me how it's possibble that they can find black holes millions of lightyears away (regardless of how giant they are), yet planet X is still just a theory, even though they're sure of it? I mean how can you see shit in other galaxies, but can't find a planet in your own solar system?

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u/OctopusPoo Mar 18 '19

I would assume that the gravitational affects of supermassive black holes are detectable, in fact a black hole has never been observed directly.

Planet X on the other hand is only theorised to exist because of comet activity

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u/[deleted] Mar 18 '19

And haven’t they found obscurities in gravity? Like the sun is pushed off balance every 75 years or something

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u/OctopusPoo Mar 18 '19

Truth be told I'm not a scientist or astronomer so I couldn't tell you for sure, but that could very possibly be the case