Launches
ON RECORD23MISSIONS
21 of them reached orbit. The earliest was 1962, the most recent 2024.
ARCHIVE // DAY OF YEAR
23 orbital launches flew on April 9, the earliest of them in 1962, and 21 reached orbit. Wikipedia records 5 spaceflight and astronomy events on April 9. Below are the pictures NASA published on April 9 in 6 different years — each one taken or released on this exact date.
23MISSIONS
21 of them reached orbit. The earliest was 1962, the most recent 2024.
5ENTRIES
Spaceflight and astronomy entries from Wikipedia's record of this date, oldest first — from 1959 onward.
6IMAGES
NASA's Astronomy Picture of the Day for April 9, one per year. Some are public domain and some belong to the photographer — each says which.
NASA’s Astronomy Picture of the Day, for this calendar date in each of the last several years.

2026
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
NASA · public domain

2025
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
NASA · public domain

2024
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
© Stan Honda — used with the credit NASA publishes

2023
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
NASA · public domain

2022
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
© Damian Peach — used with the credit NASA publishes

2021
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
© Robert Gendler — used with the credit NASA publishes
1959
NASA announced the selection of the Mercury Seven, the first astronauts in Project Mercury.
NASA ↗1959
Project Mercury: NASA announces the selection of the United States' first seven astronauts, whom the news media quickly dub the "Mercury Seven".
Project Mercury ↗2020
Soyuz MS-16 is launched from the Baikonur Cosmodrome, carrying the Expedition 62/63 crew to the International Space Station.
Soyuz MS-16 ↗2021
Soyuz MS-18 is launched from the Baikonur Cosmodrome, carrying three members of the Expedition 64 crew to the International Space Station.
Soyuz MS-18 ↗General-audience astronomy and spaceflight — none of it a textbook.
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LISTING
Still the best single argument for why any of this matters, and it leaves the arithmetic in. For a reader who wants the science, not just the awe.
LISTING
The case for leaving Earth, written by someone unsentimental about how hard that is. Suits readers who want the argument rather than the poster.
LISTING
Hard-SF problem solving in The Martian's key — for anyone who liked the engineering more than the peril. The only novel on this list.
BROWSE opens an Amazon search, not a specific recommendation.
LINKS AMAZON.COM
Event text and thumbnails come from Wikipedia and are used under CC BY-SA 4.0. Images are drawn only from Wikimedia Commons, which does not accept non-free content — each thumbnail links to its file page, where its licence and author are recorded.
Launch records are from The Space Devs’ Launch Library 2. Pictures are NASA’s Astronomy Picture of the Day; NASA imagery is generally not subject to copyright, but individual APOD entries are frequently the property of the photographer, and each caption says which applies.