Category: Earth

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Scientists Find Tiny Pieces of Opal in Meteorite

Small pieces of the mineral opal have been found within a brecciated ureilite meteorite from Antarctica. According to a team of scientists led by Prof. Hilary Downes of Birkbeck College London, UK, this find...

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Earth probably began with a solid shell

Today’s Earth is a dynamic planet with an outer layer composed of giant plates that grind together, sliding past or dipping beneath one another, giving rise to earthquakes and volcanoes. Others separate at undersea...

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Craters show Earth is bombarded at random

Do mass extinctions, like the fall of the dinosaurs, and the formation of large impact craters on Earth occur together at regular intervals? “This question has been under discussion for more than thirty years...