The most common and most likely answer to this crossword clue is the 10 letter word SPACESHIPS
I've seen this crossword clue in The Daily Telegraph
S
P
A
C
E
S
H
I
P
S
More clues leading to the result SPACESHIPS
Buddy explains!
The straight part
We know that "heavenly transport" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case heavenly transport = spaceships.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 SPACESHIPS mean?
SPACESHIPS noun- A vehicle that flies through space.
- A finite pattern that reappears after a certain number of generations in the same orientation but in a different position.
- The operator <=> in the Perl, PHP and Ruby programming languages, which compares two values and indicates whether the first is lesser than, greater than, or equal to the second.