Search results
Results from the WOW.Com Content Network
Garni is an impact crater on Mars, [1] in which, according to NASA, there is evidence of liquid water. [2] [3] In the press release of its finding on 28 September 2015, NASA considered it "the latest of many breakthroughs" in their Mars exploration. [3] NASA and the US Geological Survey named the crater after the Armenian village of Garni.
An impact crater is a depression in the surface of a solid astronomical body formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, [2] impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. [3]
Most of the suevites were resedimented soon after the impact by the resurgence of oceanic water into the crater. This gave rise to a layer of suevite extending from the inner part of the crater out as far as the outer rim. [57] Impact melt rocks are thought to fill the central part of the crater, with a maximum thickness of 3 kilometers (1.9 mi).
The largest in the last one million years is the 14-kilometre (8.7 mi) Zhamanshin crater in Kazakhstan and has been described as being capable of producing a nuclear-like winter. [11] The source of the enormous Australasian strewnfield (c. 780 ka) is a currently undiscovered crater probably located in Southeast Asia. [12] [13]
Following are the largest impact craters on various worlds of the Solar System.For a full list of named craters, see List of craters in the Solar System.The ratio column compares the crater diameter with the diameter of the impacted celestial body.
The Perseverance spacecraft landed on Mars in February 2021 and has been doing reconnaissance missions and looking for signs of life.
Jezero [a] (ICAO: JZRO) is a crater on Mars in the Syrtis Major quadrangle, [3] about 45.0 km (28.0 mi) in diameter. Thought to have once been flooded with water, the crater contains a fan-delta deposit rich in clays. [4] The lake in the crater was present when valley networks were forming on Mars.
Researchers believe they’ve discovered the world’s largest asteroid impact crater in New South Wales, Australia. They think the impact may have happened between 445 and 443 million years ago.