The Deepest Point on Planet Earth | Summary and Q&A

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June 26, 2018
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The Deepest Point on Planet Earth

TL;DR

The Mariana Trench holds the deepest point on Earth's oceans, called Challenger Deep, reaching a depth of over 10,000 meters in the Pacific Ocean.

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Questions & Answers

Q: Where is the Mariana Trench located, and what is its deepest point called?

The Mariana Trench is situated in the western Pacific, near Japan, the Philippines, and Papua New Guinea. Its deepest point is known as Challenger Deep.

Q: How deep is Challenger Deep in the Mariana Trench?

Challenger Deep reaches a maximum known depth of 10,984 meters or 30,070 feet, equivalent to approximately 1.2 miles underwater.

Q: Who was the first to measure the depth of the Mariana Trench?

The British survey ship HMS Challenger conducted the first depth measurements in 1875, recording depths of up to 8,184 meters.

Q: How has scientific interest in Challenger Deep been recently revived?

Researchers in 2009 and 2010 used sonar mapping to discover depths of 10,971 and 10,994 meters, respectively, with minimal margins of error.

Summary & Key Takeaways

  • The Mariana Trench, located off the coast of Japan, the Philippines, and Papua New Guinea, holds Challenger Deep, the deepest point on Earth's oceans.

  • The first depth measurements of the trench were made in 1875, with subsequent measurements revealing even greater depths.

  • Challenger Deep has only been explored once by a manned craft in 1960, with scientists still using TNT to estimate its depth.

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