Pluto's 'twilight Zone' Image Reveals Mysterious Wisps Of 'cloud'

2 years ago
Taken only a few minutes after closest approach on July 14, 2015, it shows the 'twilight zone' or haze of the planet
It also appears to show a cloud - which Nasa describes as ' an intriguing bright wisp measuring tens of miles'
Could be the only cloud yet identified in New Horizons imagery

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