In the history of deep sea drilling projects, the previous record was 7,049.5 meters below the sea surface, marked by the US research vessel ‘Glomar Challenger’ in the Mariana Trench in 1978 ...
Jagran Josh on MSN18d
What is Challenger Deep? The Deepest Point on EarthThe Challenger Deep, which is named after the British Royal Navy survey vessel HMS Challenger ... Trench provide scientists ...
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