description Turtle Nebula Overview
The Turtle Nebula, designated as NGC 6210, is a compact planetary nebula situated in the constellation Hercules. It was first identified by the astronomer Wilhelm Struve in 1825. The object is formed by an expanding shell of glowing ionized gas ejected from an aging central star near the end of its life cycle. It is widely observed by amateur astronomers and acquired its common name from its faint, shell-like visual resemblance to a turtle when viewed through telescopes.
help Turtle Nebula FAQ
What is the Turtle Nebula actually?
It is NGC 6210, a compact planetary nebula in the constellation Hercules, not a planet or a star-forming cloud. It is the glowing shell of ionized gas expelled by an aging central star.
Why is NGC 6210 called the Turtle Nebula?
Hubble images show a roughly turtle-shaped shell with inner arcs and jets. NASA describes hot gas streaming through holes in an older, cooler shell.
Who discovered the Turtle Nebula?
Wilhelm Struve is credited with identifying it as a nebula in 1825. Joseph Lalande had recorded a star-like object there in 1799, so the answer depends on whether discovery means the object or its nebula classification.
How far away is the Turtle Nebula?
It is about 6,500 light-years away in Hercules. NASA imagery estimates the visible turtle-shaped form at roughly 1.6 light-years across.
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