A brown dwarf is more massive than a planet , though, and thought to have formed through stellar- like nebular condensation . Brown dwarfs and planets are likely quite abundant, but usually difficult to see in the glare of brighter stars they orbit. New techniques , such as using coronagraphic masks to block the light of the bright star, are allowing the detection of these faint stellar companions. Above , much of the bright light of central Gliese 229A has been blocked and digitally subtracted, leaving the clearest image yet of Gliese 229B . Perfecting techniques like this increases ability to detect still dimmer Earth-type planets orbiting nearby stars .
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