Astronomy Picture of the Day
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October 5, 1995
CG4: A Ruptured Cometary Globule
Telescope photograph by David Malin
The odd looking "creature" to the right of centre in the above photo is a
gas cloud known as a cometary globule. This globule,
however, has ruptured. Cometary globules are typically characterized by
heads and elongated tails. These features cause cometary globules to
have visual similarities to
comets, but in reality they are very much
different. Cometary globules are frequently the birthplaces of
many show very young stars in their heads. The reason for the rupture in
the head of this object is not completely known. The galaxy to the left of
centre is very far in the distance and is only placed near CG4 by chance
Tomorrow's picture: Dark Bok Globules in IC 2944
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