It is approximately 1,500 miles long. The deepest portion of the Mariana Trench is the Challenger Deep, a narrow portion at the southern end, which is roughly 36,000 feet deep. The water temperature in this area is slightly above freezing. The world's ocean trenches remain largely unexplored due to the immense pressures at such depths.
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The Big Ten Network (BTN) is an American regional sports network that is owned as a joint venture between the Big Ten Conference (which owns 49% of the network) and the Fox Entertainment Group subsidiary of 21st Century Fox (which owns a controlling 51% interest), and is operated by Fox Sports.