Multiple choice How many times is the Sun bigger in size than the Earth? 89 times 99 times 109 times 69 times Reveal answer Fill a bubble to check yourself C Correct answer Explanation The Sun's diameter is approximately 109 times that of Earth. This means you could fit about 1.3 million Earths inside the Sun by volume. The Sun accounts for 99.86% of the total mass in our solar system.