Launches
ON RECORD10MISSIONS
10 of them succeeded. The earliest was in 1977 and the latest in 2025.
ARCHIVE // DAY OF YEAR
10 launches flew on February 23, the earliest of them in 1977, and 10 of them succeeded. Wikipedia lists 3 spaceflight and astronomy events on February 23. Pick another date to see what happened on it.
10MISSIONS
10 of them succeeded. The earliest was in 1977 and the latest in 2025.
3ENTRIES
Spaceflight and astronomy entries from Wikipedia for this date, oldest first, starting in 1987.
0IMAGES
There's no Astronomy Picture of the Day we can show for this date.
1987
SN 1987A, the first supernova that modern astronomers were able to study in great detail, was observed from Earth occurring in the Large Magellanic Cloud.
SN 1987A ↗Astronomy and spaceflight books for a general reader. No textbooks.
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LISTING
Sagan's tour of the universe and how we came to understand it. It keeps the science in.
LISTING
Sagan's case for people leaving Earth one day, and an honest look at how hard that would be.
LISTING
A science-fiction novel from the author of The Martian, built around solving one engineering problem after another.
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LINKS AMAZON.COM
Event text and thumbnails come from Wikipedia and are used under CC BY-SA 4.0. Images come only from Wikimedia Commons, which doesn't accept non-free content. Each thumbnail links to its file page, which lists its licence and author.
Launch records are from The Space Devs’ Launch Library 2. Pictures are NASA’s Astronomy Picture of the Day. Many of them belong to the photographer or a partner agency, so we only show the ones credited to NASA alone.