Exploration & discovery

Piccard and Walsh reach the bottom of the Challenger Deep

23 January 1960

On 23 January 1960 the bathyscaphe Trieste, piloted by the Swiss oceanographer Jacques Piccard and US Navy lieutenant Don Walsh, descended to the bottom of the Challenger Deep in the Mariana Trench, about 10,900 metres below the surface, the deepest known point in the oceans. The descent took almost five hours and they spent only 20 minutes on the bottom, where they reported seeing a flatfish, though this has been questioned. No human went back until film director James Cameron's solo dive in 2012. Victor Vescovo reached the same place in 2019.

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This moment belongs to the Contemporary world (1945 CE to today), the world since 1945. You can also browse everything in the 20th century.