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Science

eppur_se_muova

(37,582 posts)

12. Try reading up on the topic of "light cone" (actually a 4-D hypercone)

Reply to grumpyduck (Original post)

Wed Feb 8, 2023, 11:07 AM

Feb 2023

https://en.wikipedia.org/wiki/Light_cone

Anything outside your past light cone is invisible to you. Anything outside your future light cone cannot affect you -- its worldline and yours never intersect.

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Question for astronomy buffs. [View all] grumpyduck Feb 2023 OP

mind blowing, isn't it! NewHendoLib Feb 2023 #1

Yep! happybird Feb 2023 #2

Not related to your astronomy question but.... yonder Feb 2023 #3

Somewhat common event. Irish_Dem Feb 2023 #5

No worries. grumpyduck Feb 2023 #8

Yes we are actually viewing the past? Irish_Dem Feb 2023 #4

Yep. Beastly Boy Feb 2023 #6

That weird stuff in the shower is easily removed with spray on bleach and a brush. LastDemocratInSC Feb 2023 #7

Well, a lot of it has to do with our view of distance tornado34jh Feb 2023 #9

Try taking a bath. Worked for Archimedes. usonian Feb 2023 #10

I don't think I'd want to run naked down the street grumpyduck Feb 2023 #11

Try reading up on the topic of "light cone" (actually a 4-D hypercone) eppur_se_muova Feb 2023 #12