Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University. Follow him on Twitter @sciencef1rst.
, its ices begin to change immediately to gas in a process called sublimation. The sublimation throws out into space a stream of ancient material — unchanged since the birth of the solar system — that lingers in space.
On July 31 this particular icy fragment, which astronomers believe measured around 4 inches across, began to burn bright in the Earth's atmosphere around 60 miles above Madrid. It had burnt out by the time it reached around 48 miles above the province of Guadalajara. Scientists tracked the trajectory of the fireball using footage shot by an ESA-operated camera of the AllSky7 network in Cebreros, Spain, as well as cameras belonging to the Southwestern Europe Meteor Network and other on-the-ground cameras across Europe. Thede observations allowed SWEMN researchers to trace the meteor back to its origins, revealing it came from the same source as the
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