The most common and most likely answer to this crossword clue is the 8 letter word SIDEREAL
I've seen this crossword clue in The Guardian
S
I
D
E
R
E
A
L
More clues leading to the result SIDEREAL
- Like stars in team, genuine
- Team, one from Madrid, of stars
- Team – one from Madrid – of stars
- Where Galácticos played, following team of stars
- Not affected by team of stars
- Not supposed to follow team of stars
- Team not made up of stars
- Team leading Spanish team of stars
- Team has true following of stars
- Relating to star team, one from Madrid?
Buddy explains!

The straight part
We know that "of stars" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case of stars = sidereal.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 SIDEREAL mean?
SIDEREAL adjective- Of or relating to the stars.
- Relating to a measurement of time relative to the position of the stars.
- Relating to a measurement of time relative to the point of the vernal equinox.