The Red Rectangle Nebula"The Red Rectangle is an unusual example of what is known as a proto-planetary nebula. These are old Sun like stars, on their way to becoming planetary nebulae. Once the expulsion of mass is complete a very hot white dwarf star will remain and its brilliant ultraviolet radiation will cause the surrounding gas to glow. The Red Rectangle is found about 2 300 light-years away in the constellation Monoceros (the Unicorn)."Credit:ESA/Hubble and NASA

The Red Rectangle Nebula

"The Red Rectangle is an unusual example of what is known as a proto-planetary nebula. These are old Sun like stars, on their way to becoming planetary nebulae. Once the expulsion of mass is complete a very hot white dwarf star will remain and its brilliant ultraviolet radiation will cause the surrounding gas to glow. The Red Rectangle is found about 2 300 light-years away in the constellation Monoceros (the Unicorn)."


Credit:
ESA/Hubble and NASA

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