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Two galaxies aligned in a way where their gravity acts as a compound lens

(phys.org)
268 points wglb | 2 comments | 16 Nov 24 16:48 UTC | HN request time: 0.436s | source
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bparsons ◴[16 Nov 24 20:12 UTC] No.42158887[source]▶
If the lens curved light back toward us, could we see earth several million years ago?
replies(4): >>42158948 #>>42159200 #>>42160335 #>>42164234 #
1. DoingIsLearning ◴[16 Nov 24 20:50 UTC] No.42159200[source]▶
@Dang is there a version of /best but for comments? The thought experiment in this comment broke my mind.
replies(1): >>42159212 #
2. slater ◴[16 Nov 24 20:52 UTC] No.42159212[source]▶
https://news.ycombinator.com/highlights