Abell 7

Abell 7 is a faint planetary nebula located 1800 light-years away in the constellation of Lepus.

It has a generally spherical shape about 8 light-years in diameter.

Within the sphere are complex details that are brought out by narrowband filters.

Abell 7 is estimated to be only 20,000 years old, but the central star, a fading white dwarf, is estimated to be some 10 billion years old.

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