Io in the continuing picture

CREDIT: KATHERINE DE KLEER AND IMKE DE PATER, UC BERKELEY

Jupiter’s moon Io continues to be the most volcanically active body in the solar system, as documented by the longest series of frequent, high-resolution observations of the moon’s thermal emission ever obtained.

Using near-infrared adaptive optics on two of the world’s largest telescopes– the 10-meter Keck II and the 8-meter Gemini North, both located near the summit of the dormant volcano Maunakea in Hawaii – University of California, Berkeley astronomers tracked 48 volcanic hotspots on the surface over a period of 29 months from August 2013 through the end of 2015.

Without adaptive optics – a technique that removes the atmospheric blur to sharpen the image – Io is merely a fuzzy ball. Adaptive optics can separate features just a few hundred kilometers apart on Io’s 3,600-kilometer-diameter surface. … (Keck)

CREDIT: KATHERINE DE KLEER AND IMKE DE PATER, UC BERKELEY

CREDIT: KATHERINE DE KLEER AND IMKE DE PATER, UC BERKELEY

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