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Similarities in Sun`s Effects on Earth and Mars

“Despite differences in the chemical compositions and densities of Earth`s and Mars` atmospheres, we now have a definitive example showing that both planets` atmospheres react similarly to varying levels of solar energy impacting them during the sun`s 25-day rotation,” says Elsayed Talaat, a space scientist with the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Md.