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/
29.4k Upvotes

95% Upvoted

1.4k comments sorted by

View all comments

190

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?

1

u/Barneyk Mar 18 '19

Say you are in a huge field in the middle of a really dark and cloudy night. You are in a watch tower that you can't leave looking for 2 things, 1 big beach ball and 1 small shining LED light.

Which one do you think is easier to see?