The EU Space Surveillance and Tracking centre (SST) said one fragment - believed to be the lander - "most likely" re-entered the atmosphere at about 06:16 GMT (07:16 BST) on Saturday.
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It also became one of the early examples of user interface design conventions such as badges, rating buttons, sharing and recommendation features which have largely become standard features across media platforms today.
Dithering in its simplest form can be understood by observing what happens when we quantise an image with and without modifying the source by random perturbation. In the examples below, a gradient of 256 grey levels is quantised to just black and white. Note how the dithered gradient is able to simulate a smooth transition from start to end.
语重心长的叮嘱，既指明认识论，也给出方法论。