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4 Σεπ 2020 · Evgeny Chuvilin. CNN — video. A Russian TV crew flying over the Siberian tundra this summer spotted a massive crater 30 meters (100 feet) deep and 20 meters wide – striking in its size, symmetry...
2 Σεπ 2024 · A giant hole in the earth is breaking open the land in Siberia, and photos from space show it's growing rapidly. It's the shape of a stingray, a horseshoe crab, or a giant tadpole. It started as a sliver, barely visible in declassified satellite imagery from the 1960s.
The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]
6 Μαΐ 2019 · This is the Kola Superdeep Borehole, the deepest manmade hole on Earth and deepest artificial point on Earth. The 40,230ft-deep (12.2km) construction is so deep that locals swear you can...
20 Οκτ 2023 · The Kola Superdeep Borehole in Russia is the deepest hole in the world. It's deeper than the Mariana Trench and deeper than Mt. Everest is tall. Why did the Russians dig this deep, and why did they stop?
One crater recently examined by Chuvilin – a 66ft-wide (20m) hole known as the Erkuta crater after the river whose flood plain it appeared on – appears to have formed on the spot of a dried up ...
A supermassive black hole (SMBH) is an extremely large black hole, on the order of hundreds of thousands to billions of solar masses (M ☉), and is theorized to exist in the center of almost all massive galaxies.
