Below you can find the It has the strongest surface gravity of our sun's planets 2.64 times that of earth Jeopardy Words Answer. The answer to It has the strongest surface gravity of our sun's planets 2.64 times that of earth has 7 letters. This clue belongs to the The planets category and is part of Jeopardy Word Level 2499. If you scroll near the bottom you will find other clues and answers part of level 2499