* Astronomy

A paper recently appeared in this Journal which proposed that the hook-like shadow recorded on the floor of the lunar crater Plato by Wilkins and Moore on 1952 April 3, is projected by a complex and elongated hill lying on Plato's floor, at the foot of its south wall.

The hill is easily visible on Lunar Obiter IV images and has coordinates
eta = 0.7693, xi = -0.0875 (latitude 50.29°, longitude -7.87°). Some Italian authors and an ALPO editor maintained another opinion expressed by O'Connell in 1998, that the hook shadow is shed by the gamma peak (peak #3 in paper), the tallest of the Plato's east rim peaks.

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Title: Plato's hook: still an open problem
Authors: Braga, R. & Ferri, F.

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Title: The Moon - Plato's hook, Part III. On the curvature of the Gamma Peak's shadow on Plato's floor
Authors: Lena, R., di Iorio, G., Bares, A., Fattinnanzi, C., & Favero, G.

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