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xkcd #3219: Planets and Bright Stars (thelemmy.club)

submitted 1 month ago by xkcdbot@lemmy.world to c/xkcd@lemmy.world

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Title text:

An old astronomer trick for distinguishing the Sun from other stars is to take multiple photos a few minutes apart and overlay them, making the Sun stand out due to its high proper motion.

Transcript:

Transcript will show once it’s been added to explainxkcd.com

Source: https://xkcd.com/3219/

explainxkcd for #3219

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[-] Feddinat0r@feddit.org 33 points 1 month ago

Thanks, will print it out for reference

[-] WhyIHateTheInternet@lemmy.world 20 points 1 month ago

Be sure to print in color otherwise they'll all look the same

[-] 18107@aussie.zone 29 points 1 month ago

Do not 3d print this one. It may exceed the z-axis limit for your printer.

[-] eager_eagle@lemmy.world 2 points 1 month ago

or rescale it and risk creating a singularity

[-] lugal@lemmy.dbzer0.com 8 points 1 month ago

Thanks, I always confuse these two

[-] Xaphanos@lemmy.world 5 points 1 month ago

It's not wrong.

this post was submitted on 13 Mar 2026

276 points (99.3% liked)

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