See
http://www.cpushack.com/2013/02/21/char ... rocessors/
which describes how Harris licensed Moore's Novix CPU chips and put theirs into some hundreds of satellites and space probes, including Messenger which orbits Mercury and Cassini which orbits Saturn.

As it says, nice that a language invented for telescope control has gone out into the Solar system.

These Forth processors scream performance, doing more Forth MIPS than MHz, in spite of very simple hardware. I keep thinking I really ought to get serious about looking into them. It's just that there's too much to do.