Science
Astronomers spot a ‘space jellyfish’ in Abell 2877 – Phys.Org

“This radio jellyfish holds a world record of sorts. Whilst it’s bright at regular FM radio frequencies, at 200 MHz the emission all but disappears.”No other extragalactic emission like this has been observed to disappear anywhere near so rapidly.”
This uniquely steep spectrum has been challenging to explain. “We’ve had to undertake some cosmic archaeology to understand the ancient background story of the jellyfish,” said Hodgson.
“Our working theory is that around 2 billion years ago, a handful…
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