![f0003-01.jpg](https://article-imgs.scribdassets.com/3l7vakrhz4cn9e9u/images/fileF7IWSHXT.jpg)
Thirty years ago this month, astronomers around the world witnessed one of the most dramatic moments in the history of science. Between 16 and 22 July, Katrin Raynor looks back at the compelling event and considers its legacy for science and the protection of planet Earth.