the Mariana Trench
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Rare meteorite provides evidence of giant early planet
Rare meteorite provides evidence of giant early planet Stephanie Baum Scientific Editor Robert Egan Associate Editor Four-and-a-half billion years ago, a massive world—possibly as big as the moon or even Mars—orbited our sun before crashing into another celestial body and shattering into rubble. Now, in a paper published in the journal Earth and Planetary Science Letters, scientists report the first definitive evidence that this lost planetary embryo (protoplanet) existed. Its unique...
Ancient lake cores reveal unprecedented 2012 Rwenzori fire and ecological shift
Ancient lake cores reveal unprecedented 2012 Rwenzori fire and ecological shift Andrew Zinin Lead Editor For the past several years, Penn State geoscientist Sarah Ivory and her students have been among a team of scientists scaling the East African Rwenzori Mountains, collecting sediment core samples from lakes formed at the end of the last ice age as glaciers began receding in the region some 12,000 years ago. Among those cores was a surprising revelation: A 2012 wildfire that ravaged 16...
Meteorite found in Sahara desert may be 1st evidence of lost solar system world
Meteorite found in Sahara desert may be 1st evidence of lost solar system world "It points to a distinct and separate evolutionary path in planetary formation in the early history of our solar system." A rare meteorite recovered from the Sahara Desert contains the first definitive evidence of a long-lost world that may have rivaled the moon in size and existed just a few million years after the solar system formed 4.5 billion years ago, according to a new study. The meteorite, known as...