Palindromic constellation

ARA

This southern star group shares its name with a Latin prayer’s ending.

"Palindromic" hints that the answer reads the same backward as forward, like "ARA" (A-R-A). "Constellation" refers to a star pattern in the sky, and ARA is a small southern constellation named after the Latin word for "altar." The clue cleverly combines a wordplay trick (palindrome) with a straightforward astronomical term to point to this three-letter answer.