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The following structures are officially considered "unconfirmed" because they are not listed in the Earth Impact Database. Due to stringent requirements regarding evidence and peer-reviewed publication, newly discovered craters or those with difficulty collecting evidence generally are known for some time before becoming listed.
The fragments contain an unusually high density of inclusions for an iron meteorite, which may have contributed to the disintegration of the original meteorite. The average composition of the Campo del Cielo meteorites is 3.6 ppm iridium , 87 ppm gallium , 407 ppm germanium , 0.25% phosphorus , 0.43% cobalt , and 6.67% nickel , with the ...
Most larger meteorites are cold in their bulk mass when they land on Earth, since their heated outer layers ablate from the objects before impacting. [16] It was later confirmed that the meteorite contained a large amount of iron and possessed magnetic properties common to similar metallic objects, which contributed to its capacity to retain ...
Chris Herd, curator of the University of Alberta's meteorite collection, later confirmed that it was in fact, a meteorite. Specifically, he said, it's an "ordinary chondrite," the most common kind ...
The Massalia asteroid family, formed about 40 million years ago, accounts for a class of meteorites called L chondrites that represent 37% of known Earth meteorites, the research found.
Tswaing (Tswana for "place of salt" [1]) is an impact crater enclosed by a 1,946 ha nature reserve, situated in northern Gauteng province, South Africa. The crater and reserve are situated on a base of ancient granite of the Bushveld Igneous Complex , some 40 km to the north-northwest of Pretoria (just north of Soshanguve ). [ 1 ]
The space rock that slammed into Earth 66 million years ago at the end of the Cretaceous Period caused a global calamity that doomed the dinosaurs and many other life forms. Researchers assessed ...
The asteroid Toutatis is listed as a potentially hazardous near-Earth asteroid, yet poses no immediate threat to Earth.(Radar image taken by GDSCC in 1996.)A potentially hazardous object (PHO) is a near-Earth object – either an asteroid or a comet – with an orbit that can make close approaches to the Earth and which is large enough to cause significant regional damage in the event of ...