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1. Robert McNees (mcnees@mastodon.social)'s status on Sunday, 08-Oct-2023 17:47:25 UTC Robert McNees

   Astronomer Ejnar Hertzsprung was born #OTD in 1873.

   The Hertzsprung-Russell diagram plots the luminosity of stars vs their surface temperature. The vertical axis is luminosity, low to high moving upwards. The horizontal axis is temperature, from higher to lower reading left to right.

   Emoji H-R diagram!

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   • Steve DeGroof 📚🛸 (degroof@mastodon.social)'s status on Sunday, 08-Oct-2023 18:10:18 UTC Steve DeGroof 📚🛸

     in reply to

     @mcnees I generated an H-R diagram for the cover art of one of my books. Realized too late that I should've skipped the green. 🤣

   • SellaTheChemist (sellathechemist@mastodon.social)'s status on Sunday, 08-Oct-2023 18:12:14 UTC SellaTheChemist

     in reply to

     @mcnees I know it's rather old school but "O Be A Fine Girl Kiss Me Now. Smack!"?

     I always liked the idea that the girl slapped the naughty astronomer across the face at the end!