Launches
ON RECORD34MISSIONS
30 of them succeeded. The earliest was in 1958 and the latest in 2026.
ARCHIVE // DAY OF YEAR
34 launches flew on May 15, the earliest of them in 1958, and 30 of them succeeded. Wikipedia lists 3 spaceflight and astronomy events on May 15. Pick another date to see what happened on it.
34MISSIONS
30 of them succeeded. The earliest was in 1958 and the latest in 2026.
3ENTRIES
Spaceflight and astronomy entries from Wikipedia for this date, oldest first, starting in 1836.
0IMAGES
There's no Astronomy Picture of the Day we can show for this date.

1836
English astronomer Francis Baily observed Baily's beads (example pictured), a phenomenon during a solar eclipse in which the rugged topography of the lunar limb allows sunlight to shine through.
Francis Baily ↗1963
Project Mercury: The launch of the final Mercury mission, Mercury-Atlas 9 with astronaut Gordon Cooper on board. He becomes the first American to spend more than a day in space, and the last American to go into space alone.
Project Mercury ↗1997
The Space Shuttle Atlantis launches on STS-84 to dock with the Russian space station Mir.
Space Shuttle Atlantis ↗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.