Английская Википедия:Abell 7

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Шаблон:Short description Шаблон:Planetary nebula

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.[1][2][3]

References

Шаблон:Reflist

External links

Шаблон:Lepus (constellation)