On New Year’s Day, a NASA (National Aeronautics and Space Administration) spacecraft made history by encountering the most distant object ever visited, over 4 billion miles away. The piano-sized spacecraft has already transmitted images of an icy rock known as Ultima Thule, which scientists believe to be a pristine vestige of the early days of our solar system. Listen to this interview with a planetary scientist to learn why this event is so exciting and how the mission may further our understanding of our solar system’s origins.
Story Length: 3:27
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