Launches
ON RECORD30MISSIONS
27 of them reached orbit. The earliest was 1960, the most recent 2025.
MARKED ON THIS DATE
1970 · 56 years ago today
Venera 7 transmits from Venus
Venera 7 survived its descent and sent twenty-three minutes of data from the surface of Venus, the first from another planet.
read moreARCHIVE // DAY OF YEAR
30 orbital launches flew on December 15, the earliest of them in 1960, and 27 reached orbit. Wikipedia records 3 spaceflight and astronomy events on December 15. Below are the pictures NASA published on December 15 in 5 different years — each one taken or released on this exact date.
30MISSIONS
27 of them reached orbit. The earliest was 1960, the most recent 2025.
3ENTRIES
Spaceflight and astronomy entries from Wikipedia's record of this date, oldest first — from 1965 onward.
5IMAGES
NASA's Astronomy Picture of the Day for December 15, 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.

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.
NASA · public domain

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.
© Robert Nemiroff — used with the credit NASA publishes

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.
© Robert Nemiroff — 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.
NASA · public domain
1965
Project Gemini: Gemini 6A, crewed by Wally Schirra and Thomas Stafford, is launched from Cape Kennedy, Florida. Four orbits later, it achieves the first space rendezvous, with Gemini 7.
Project Gemini ↗1970
The Soviet spacecraft Venera 7 touched down on the surface of Venus, making the first successful landing of a spacecraft on another planet.
Venera 7 ↗1970
Soviet spacecraft Venera 7 successfully lands on Venus. It is the first successful soft landing on another planet.
Venera 7 ↗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.