Challenger Deep
The deepest known point of Earth's seabed, in the Mariana Trench south-west of Guam, about 10,935 metres deep. It is named after HMS Challenger, which first sounded the area in 1875; in January 1960 the bathyscaphe Trieste took Jacques Piccard and Don Walsh to the bottom.
Dated events and their evidence
- 1875 CE mainstream
23 March: HMS Challenger, on the first major expedition devoted entirely to oceanography, sounds 8,184 m at station 225 near the deepest point source - 1951 CE mainstream
the survey ship HMS Challenger II establishes the record-setting depth of the trench source - 1960 CE mainstream
23 January: the bathyscaphe Trieste, piloted by Jacques Piccard and Don Walsh, makes the first descent by any vehicle to the bottom source - 2012 CE mainstream
26 March: James Cameron makes a solo descent in Deepsea Challenger, touching down at 10,908 m source - 2021 CE mainstream
a 2021 study revises the maximum depth to 10,935 +/- 6 m source
Where
11.3733° N, 142.5917° E
The point is the GEBCO gazetteer position, 11 deg 22.4' N 142 deg 35.5' E, as given on Wikipedia.
Sources
- https://en.wikipedia.org/wiki/Challenger_Deep
- https://en.wikipedia.org/wiki/Trieste_(bathyscaphe)
- https://doi.org/10.1016/j.dsr.2021.103644
Each event carries Aion's own evidence grade (mainstream, disputed or speculative). This page repeats what the globe shows for this place.