New research suggests Mars' Olympus Mons volcano was once an island in ancient ocean

Analysis shows Olympus Mons has similarities to active volcanic islands on Earth, indicating past Martian oceans.
Olympus Mons is the largest volcano in the solar system and has a pronounced cliff-like base.
Similar features found on the Martian volcano Alba Mons further support the ancient ocean theory.
The findings provide new insights into Mars' water history and highlight areas for future exploration.
Further research is needed to determine the timing and fate of Mars' ancient oceans and potential life.