Between 160 and 560 km, the atmosphere consists of about 90% atomic oxygen.

In 1967, Venera 4 confirmed that the atmosphere consisted primarily of carbon dioxide.

Mercury's almost negligible atmosphere consists of atoms blasted off its surface by the solar wind.

The outer atmosphere of Saturn consists of about 93.2% hydrogen and 6.7% helium.

The Venus surface is hot enough to melt many metals, and its atmosphere consists largely of sulfuric acid.

They used this data, combined with mass and temperature information, to determine what the star's 1cm thick atmosphere consisted of.

The first atmosphere would have consisted of gases in the solar nebula, primarily hydrogen.

Jupiter's atmosphere consists of about 12 jet streams alternately blowing east and west, producing its stripes.

Earth's atmosphere consists of approximately 21% oxygen.

Yet the Earth's atmosphere currently consists of about 78 percent nitrogen, 20 percent oxygen and 2 percent other gases.