https://en.wikipedia.org/wiki/IDL_(programming_language) is the one you're looking for :)

It's a popular (and frankly terrible) language used in astronomy and astrophysics. My first (semi-professional) programming job was a high school internship at NASA AMES writing IDL to process data from the Cassini probe orbiting Saturn. At that time you had to use a clunky IDE for development and the whole toolchain was proprietary.