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Massive compact halo object
? TBD
Hypothetical form of dark matter in galactic halos
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A Massive Compact Halo Object (MACHO) is a kind of astronomical body that might explain the apparent presence of dark matter in galactic halos. A MACHO is a body that emits little or no radiation and drifts through interstellar space unassociated with any planetary system (and may or may not be composed of normal baryonic matter). Since MACHOs...

Instance of
astronomical object type
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Astronomical object
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