Three hours after insertion in December 2015 and in "a few glimmers in April and May" 2016 the craft's instruments recorded a "bow-shape feature in the atmosphere stretching 6,000 miles, almost pole to pole — a sideways smile". Scientists on the project termed the feature a "gravity wave" in the planet's winds above Aphrodite Terra, "a highland region about the size of Africa that rises up to three miles from the surface". The mission is collecting data in all relevant spectral bands from ultraviolet (280 nm) to mid-infrared wavelengths (10 μm).