Height, depth and spaceDiameter
Largest crater in the Solar System
3,300 km
2,050.5 mi
- Record holder
- Utopia
What to remember
On Mars, the Utopia impact basin measures an estimated 3,300 km (2,100 mi) across, or 50% of the diameter of the planet, which is 6,780 km. It is the largest confirmed impact basin in the Solar System.
Its age is estimated at more than 4 billion years. It was struck by an impactor that was likely around 400 to 700 kilometres in diameter. The basin lies within the broader North Polar or Borealis Basin, which covers most of the Martian northern hemisphere, at the antipode of Argyre Planitia.
Inside it lies a large plain, Utopia Planitia, the site of two landings: the Viking 2 lander touched down there on September 3, 1976, and the Zhurong rover on May 14, 2021, as part of the Tianwen-1 mission. The plain is named after the Utopia glacier in Antarctica.
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Sources and licences
- Value, holder and date: Wikipedia article “List of largest craters in the Solar System” (revision used 1380021323). Data from Wikipedia, licensed under CC BY-SA 4.0.
- Photo: ESA/DLR/FUBerlin/AndreaLuck, Photo licensed under CC BY 2.0 (Wikimedia Commons).
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