Watch the biggest comet explosion spray dust across the cosmos | Live Science

The dust trail from the biggest comet explosion ever seen will grace the skies this summer – and it will look like a giant hourglass.

The nightly spectacle will be provided by Comet 17P/Holmes, which in October 2007 released a huge flash of gas and dust, brightening by a factor of a million and briefly becoming the largest object in the world. solar system. During this brief period, its coma, the cloud of dust surrounding the body of the comet, had a diameter larger than the sun.

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