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For decades, scientists have been baffled by two enormous structures buried deep inside Earth. These anomalies may retain geochemical signatures distinct from the surrounding mantle. Yet, their origin remains enigmatic. Rutgers University…

NASA cut the planned missions of Boeing Co.’s Starliner spacecraft to the International Space Station from six to four, following a highly publicized botched test flight last year and as the orbiting lab heads for retirement by the end of the…