Planetesimal orbits around a white dwarf. (IMAGE)

JILA

Planetesimal orbits around a white dwarf.

Caption

Planetesimal orbits around a white dwarf. Initially, every planetesimal has a circular, prograde orbit. The kick forms an eccentric debris disk which with prograde (blue) and retrograde orbits (orange).

Credit

Credit: Steven Burrows/Madigan Group/JILA

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