I just attempted this and have it about half done. I'll try again when I'm not so tired and should get a few more. I already know that I won't get 1 down.
I'll look at the answers in a few days.
I mucked around making astro cross-words about 25-30 years ago. Fully manual of course. The questions tended to get a bit obscure when I was 'filling in the corners'. The occasional (accidently) miss spelt word added to the degree of difficulty
. Fortunately I don't think any copies survive.