T hough comets themselves are only kilometres across, the gas and dust freed from their icy surfaces can stretch vast distances, blown by the solar wind and by radiation pressure. Here, a bright comet passes behind the Earth as it heads towards the Sun, its tail – longer than the radius of Earth's orbit – dwarfing the puny planet and its satellite.
Name: Long Hair
Category: Solar System
Medium: Photoshop
Date: 2001
Client: Cambridge University Press
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