Tootfinder

50 years ago #OTD at 16:09 UTC #Soyuz 19 and the final #Apollo spacecraft docked in orbit in the Apollo–Soyuz Test Project or Экспериментальный полёт «Союз»–«Аполлон» (the Americans and Soviets never agreed on which s/c comes first): https://www.nasa.gov/apollo-soyuz-test-project/ = various NASA materials, https://historycollection.jsc.nasa.gov/JSCHistoryPortal/history/astp.htm = many links, https://www.nasa.gov/wp-content/uploads/2023/04/sp-4209.pdf = a biiiig book, https://www.facebook.com/AstroDrewMorgan/posts/pfbid0wcN12LcAfRYYTmiWS71GQ47P42jukXVhd2QWA7eBzgg1wbdZAKq8LXVGTC9o7tKtl and https://www.facebook.com/ralf.heckel1/posts/pfbid02jcFp85PRy2UBUs4JVhPQcBnmddC8sQbPL3Vx26XoFMvbbsToNJmpLMDrRfce98HPl and https://www.facebook.com/groups/176051159106442/posts/24331420949809459 and https://www.facebook.com/groups/48800622850/posts/10162318303047851 = more visuals, https://www.youtube.com/live/Mu7iEyaOmDM = an online event, https://arstechnica.com/space/2025/07/not-that-into-peace-doves-the-apollo-soyuz-patch-nasa-rejected/ and https://www.spacerockethistory.com/2025/02/space-rocket-history-457-apollo-soyuz-test-project-soviet-concerns-with-apollo/ and http://www.collectspace.com/news/news-071425a-apollo-soyuz-test-project-astp-official-flight-kit-ofk-apk.html and https://www.nytimes.com/2025/07/14/science/apollo-soyuz-test-project-1975-anniversary.html?smid=bs-share = articles and https://scicomm.xyz/@Nick_Stevens_graphics@mastodon.art/114858897568849751 = a contemporary cartoon.

#OTD 11 jaar geleden kwam de Russische agressie ook naar Nederland. De MH17 werd door een Russische luchtdoelraket neergeschoten, 298 mensen kwamen om het leven.
Ik herinner me nog de eerste teletekstmelding, maar wat mij vooral is bijgebleven is (weken later) het dagelijkse ritueel van het overbrengen van de slachtoffers. Deze video is door iemand anders gemaakt op de plek waar ik ook een aan…

#OTD 2024. Rotterdam.

Ten years (!) ago #OTD the first - and shockingly clear - #GravitationalWave signal was seen by the two LIGO detectors ... rumors flew immediately but the official announcement came only in February 2016: https://telescoper.blog/2025/09/14/a-decade-of-gravitational-waves/ and a lot more in https://ligo.org/wp-content/uploads/2025/09/LIGO-magazine-issue27.pdf plus a long article from back then in https://cplberry.com/2016/02/11/gw150914/ and a 1-1/2-hour documentary at https://www.youtube.com/watch?v=dX4vCNi544w

Happy Birthday Elon Musk STONEWALL WAS A RIOT, WE WILL NOT BE QUIET #OTD (28th of June)

Mathematician Karen Keskulla Uhlenbeck was born #OTD in 1942.
She is known for her work on PDEs, calculus of variations, topology, and gauge theory, and was the second woman (after Emmy Noether!) to give the plenary lecture to the International Congress of Mathematicians.

Robert McNees (@mcnees.bsky.social)
Mathematician Karen Keskulla Uhlenbeck was born #OTD in 1942. She is known for her work on PDEs, calculus of variations, topology, and gauge theory, and was the second woman (after Emmy Noether!) to give the plenary lecture to the International Congress of Mathematicians. 👩‍🔬 🧪

#TIL that #otd two years ago, Bram Moolenaar died. He wrote a piece of software that has been acompanying me since my very first days of #Linux (on

This is a picture I took on this exact day 14 years ago. It shows compact electric vehicles for shared mobility in Berlin, Germany. The future was here — where did it go?
#OTD #EV

35 years ago #OTD the #Hubble Space Telescope with its mishappen optics took this image of #Saturn - which could be sharpened a lot mathematically (as the paper https://articles.adsabs.harvard.edu/full/1991ApJ...369L..51W later described) since the object was so bright. It's being said that this one image was used by NASA to convince key U.S. politicians that the broken satellite still had some life in it ... and so it was, for 35 years now!

#OTD in 2007 op de Domtoren, richting station #Utrecht CS. Ter vergelijking een latere foto (2 juni 2022 ter gelegenheid van 900 jaar stadsrechten)

#OTD 2014: spending the night at the #Bauhaus in Dessau