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Helix Nebula |
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Helix Nebula [′hē‚liks ′neb·yə·lə]
(astronomy) A planetary nebula in Aquarius about 140 parsecs (2.7 × 1015miles or 4.3 × 1015kilometers) distant that has a high helium abundance and the largest known diameter of any planetary nebula. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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NGC 7293 |
NGBW NGC NGC NGC 1275 NGC 1316 NGC 1952 NGC 1952 NGC 1976 NGC 2070 NGC 2237 NGC 224 NGC 224 NGC 292 NGC 292 NGC 3587 NGC 4594 NGC 4755 NGC 5128 NGC 5139 NGC 5139 NGC 5194 NGC 6514 NGC 6523 NGC 6611 NGC 6618 NGC 6720 NGC 6720 NGC 6853 NGC 6960 NGC 7009 NGC 7293 NGC2PNGC4 NGCA NGCAA NgCAM NGCB NGCBPS NGCC NGCCA NGCCB NGCCI NGCCS NGCD NGCDC NGCDP NGCE NGCF NGCG NGCGH NGCH NGCHD NGCI NGCIG | |||||
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