Launches
ON RECORD21MISSIONS
21 of them reached orbit. The earliest was 1964, the most recent 2024.
ARCHIVE // DAY OF YEAR
21 orbital launches flew on June 6, the earliest of them in 1964, and 21 reached orbit. Wikipedia records 4 spaceflight and astronomy events on June 6. Below are the pictures NASA published on June 6 in 6 different years — each one taken or released on this exact date.
21MISSIONS
21 of them reached orbit. The earliest was 1964, the most recent 2024.
4ENTRIES
Spaceflight and astronomy entries from Wikipedia's record of this date, oldest first — from 1944 onward.
6IMAGES
NASA's Astronomy Picture of the Day for June 6, 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.
© Mike Selby — used with the credit NASA publishes

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.
© Lóránd Fényes — 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.
NASA · public domain

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.
NASA · public domain
1944
World War II: Commencement of Operation Overlord: The Allied invasion of Normandy begins with the execution of Operation Neptune—commonly referred to as D-Day—the largest seaborne invasion in history. Nearly 160,000 Allied troops cross the English Channel with about 5,000 landing and assault craft, 289 escort vessels, and 277 minesweepers participating. By the end of the day, the Allies have landed on five invasion beaches and are pushing inland.
Operation Overlord ↗1971
Soyuz 11 is launched. The mission ends in disaster when all three cosmonauts, Georgy Dobrovolsky, Vladislav Volkov, and Viktor Patsayev are suffocated by uncontrolled decompression of the capsule during re-entry on 29 June.
Soyuz 11 ↗2002
Eastern Mediterranean event. A near-Earth asteroid estimated at ten meters in diameter explodes over the Mediterranean Sea between Greece and Libya. The explosion is estimated to have a force of 26 kilotons, slightly more powerful than the Nagasaki atomic bomb.
2002 Eastern Mediterranean event ↗General-audience astronomy and spaceflight — none of it a textbook.
As an Amazon Associate I earn from qualifying purchases. Links here cost you nothing extra.
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.