Create a passphrase made of famous space words, for example names of rockets and astronauts.¹

Example: https://natronics.github.io/space-phrase/

Download the code. To use, for example, in a site like this include it and call phrase:

<script src="space-phrase.js"></script>
<script>
    // Get a random space phrase:
    console.log(phrase({'deliminator': '-'}));
</script>

1. Maybe don't actually use this for an important password²
2. Seriously, the word list is small and public. Still, it's fun though