Cryptic crossword clue
Nun and me circled around spacecraft, for example, without astronauts 8

The most common and most likely answer to this crossword clue is the 8 letter word UNMANNED

U
N
M
A
N
N
E
D

Buddy explains!

The straight part
We know that "spacecraft, for example, without astronauts" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case spacecraft, for example, without astronauts = unmanned.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does UNMANNED mean?

UNMANNED verb
  1. To castrate; to remove the manhood of.
  2. To sap (a person) of the strength, whether physical or emotional, required to deal with a situation.
  3. To deprive of men.
UNMANNED adjective
  1. Not operated by a person or a crew

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