The Moon landing was the biggie, but there are other space anniversaries worth noting this year.
It’s exactly 30 years – 25 August 1989 – since NASA’s Voyager 2 spacecraft made its closest approach to Neptune, giving humanity its first good look at our solar system’s eighth planet. No other spacecraft has visited since.
This picture was produced from the last whole planet images taken through the green and orange filters on the Voyager 2 narrow angle camera.
The conclusion of the flyby marked the beginning of the Voyager Interstellar Mission, which continues today.
At the time of the Neptune encounter, Voyager 2 was about 4.7 billion kilometres from Earth; today it is 18 billion kilometres from us. The faster-moving Voyager 1 is 21 billion kilometres away.
Originally published by Cosmos as Anniversary of an image
Curated content from the editorial staff at Cosmos Magazine.
Read science facts, not fiction...
There’s never been a more important time to explain the facts, cherish evidence-based knowledge and to showcase the latest scientific, technological and engineering breakthroughs. Cosmos is published by The Royal Institution of Australia, a charity dedicated to connecting people with the world of science. Financial contributions, however big or small, help us provide access to trusted science information at a time when the world needs it most. Please support us by making a donation or purchasing a subscription today.