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Cat's Eye Nebula Reference Libraries

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Planetary Nebula
2004-10-19 04:45:42

Planetary Nebula -- A planetary nebula is an astronomical object that usually appears nebulous and disk-like in low-resolution observations. Because of this appearance, similar to the appearance of planets in early observations, the "planetary" adjective was attached and has since been retained for historical consistency. According to current observations and models, planetary nebulae...

Word of the Day
whirret
  • To give a box on the ear to.
The word 'whirret' may be onomatopoeic.