Planetary nebula

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an eyeball in the sky with stars around it
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an image of a planetary object in the sky with stars around it and a spiral shape

The planetary nebula NGC 6369 is in the constellation Ophiuchus. More than 3,000 light years away, it was formed by an aging central star . The main ring of the nebula is about 1 light year in diameter, and the glow of ionized oxygen, hydrogen and nitrogen atoms is blue, green and red, respectively. Photo : NASA - Hubble Space Telescope.

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an orange and blue object is shown in the dark sky, with bright light coming from it

NASA’s Chandra X-ray Observatory contributes to the understanding of planetary nebulas by studying the hottest and most energetic processes still at work in these beautiful objects. X-ray data from Chandra reveal winds being driven away from the white dwarf so quickly (i.e., millions of miles per hour) that they create shock waves during collisions with slower-moving material previously ejected by the star. Chandra’s exceptional vision in X-rays contributes to the understanding of this…

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