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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Squire cites Lucy's case, which he tackled early in his career, as the inspiration for his long-term dedication.
Despite the 2984's lackluster success, IBM moved on. I don't think IBM was