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Solis Lacus: The Eye of Mars

Mars is growing brighter in our night skies, approaching its 2020 opposition on October 13. This view of Mars from September 22 shows its disk near its maximum apparent size for Earth-bound telescopes. The seasonally shrinking south polar cap is at the bottom, and hazy northern clouds are at the top. The circular, dark feature Solis Lacus is visible, often called the Eye of Mars.