Heart on Mars
Heart on Mars This heart-shaped pit on Mars is within Acheron Catena, one of many fissures on the eastern flank of Alba Patera. The heart is about 2.3 kilometers across at its widest. It was first noticed in a MOC image from Mars Global Surveyor; this image is from CTX on Mars Reconnaissance Orbiter and has a resolution of 6 meters per pixel. NASA / JPL / MSSS

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Chain of pits (including a heart) within Acheron Catena
Chain of pits (including a heart) within Acheron Catena At the center of this image is a heart-shaped pit within Acheron Catena, one of many fissures on the eastern flank of Alba Patera on Mars. The heart is about 2.3 kilometers across at its widest. It was first noticed in a MOC image from Mars Global Surveyor; this image is from CTX on Mars Reconnaissance Orbiter. NASA / JPL / MSSS

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