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December 4, 1995
GL 229B: An Elusive Brown Dwarf?
(Caltech), S. Durrance
What type of matter makes up most of the universe? This question is
arguably the most perplexing astronomical mystery of our time. A leading
candidate is a type of dim, low mass star called a
dwarf" star. Our universe could contain more
dwarfs than any other type of star - but they are so dim they have so
far escaped detection. The dramatic
taken in October 1994, sheds new light on this
The seemingly inconspicuous companion to the right of the overexposed
image of a normal star is thought to be an elusive
Now that the existence of brown dwarfs has been demonstrated, a key
remaining question is their abundance.
Tomorrow's picture: The Swirling Centre of NGC 4261
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