Finding Phobos: Discovery of a Martian Moon

Mars Express images of Phobos from January 9, 2011 flyby

If someone were to ask you when fear was first discovered, you could tell them August 11, 1877. That’s when, 134 years ago today, Asaph Hall¬†identified Phobos, the larger of Mars’ two moons. But even though it’s named after the Greek god of fear, there’s nothing to be afraid of…

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