Saturn's atmosphere consists of 75.3% hydrogen and 24.25% helium.what percentage of Saturn's atmosphere is made up of other gases?

75.3 + 24.25 = 99.55

100 - 99.55 = 0.45

To determine the percentage of Saturn's atmosphere made up of other gases, we need to subtract the percentages of hydrogen and helium from 100%.

First, let's add the percentages of hydrogen and helium together:
75.3% + 24.25% = 99.55%

Next, subtract this total from 100% to find the percentage of other gases:
100% - 99.55% = 0.45%

Therefore, approximately 0.45% of Saturn's atmosphere is composed of other gases.