See the Nebula Star Necklace

The nebula in the image also has the name PN G054.2-03.4 and is located in the small dim constellation Sagittarius. An object

was discovered in 2005 as part of the IPHAS survey, a ground-based H-alpha survey of planetary nebulae in the northern galactic plane.

The Necklace Nebula is a consequence of the outbreaka giant star after that star came too close to a sun-like companion star. The two stars that created the Necklace Nebula are in relatively close orbits relative to each other. The orbital period is 1.2 days, the distance between the stars is approximately 5 solar radii.

Under such conditions, the gaseous envelope of a huge star expands into space. The nebula is approximately two light years in diameter.

The image shown is a composite:it is compiled on the basis of several images transmitted to Earth from Hubble. The nebula was photographed using the Wide Field Camera 3, the most technologically advanced instrument at the space observatory.

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