Author: Jamie Carter
For the last 33,000 years Earth has been travelling through a cloud of faintly radioactive dust from supernovae explosions—and the evidence is in our planet’s oceans, according to a new paper.
Researchers at the The Australian National University’s (ANU) Heavy Ion Accelerator Facility (HIAF) found traces of iron-60 in deep-sea sediments from two different locations that date back 33,000 years.
“These clouds could be remnants of previous supernova explosions, a powerful and super bright explosion of a star,” said lead author Professor Anton Wallner, a nuclear physicist at ANU.
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