Mysterious red 'cap' on Pluto's moon could be 'sticky organic residue' - Yahoo News Canada

When Nasa’s tiny New Horizons probe travelled three billion miles to Pluto it spotted something very mysterious on Pluto’s moon Charon - a red ‘cap’

Plutos largest moon Charon captured by Nasa's New Horizons spacecraft in July 2015. (Reuters) When Nasa's tiny New Horizons probe travelled 3 billion miles to Pluto it spotted something mysterious o… [+3572 chars]

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