If dark matter exists it may take the form of mirror planets, mirror stars and mirror galaxies. Now one physicist says the most recent evidence seems to confirm this idea. When astronomers study distant galaxies, they see only a small fraction of the mass needed to hold these clumps of stars together. Without some kind of extra hidden mass, galaxies ought to fly apart. Astronomers call this hidden mass 'dark matter' and physicists around the world are engaged in an increasingly desperate race to find evidence of it here on Earth. The main possible candidates include MACHOS and WIMPS, but there is no shortage of proposals.
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