The Sky Tonight

April 01, 2013

Hubble Sees J 900 Masquerading as a Double Star
Baltimore MD (SPX) Apr 01, 2013
The object in this image is Jonckheere 900 or J 900, a planetary nebula - glowing shells of ionized gas pushed out by a dying star. Discovered in the early 1900s by astronomer Robert Jonckheere, the dusty nebula is small but fairly bright, with a relatively evenly spread central region surrounded by soft wispy edges. Despite the clarity of this Hubble image, the two objects in the picture above can be confusing for observers. J 900's nearby companion, a faint star in the constellation of Gemini, o ... read more

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