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What does MACHO stand for?

MACHO stands for Massive Compact Halo Object (astronomy)

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We have 1 other meaning of MACHO in our Acronym Attic

Samples in periodicals archive:

1993 | Dark Milky Way Astronomers report evidence of Massive Compact Halo Objects at the outskirts of the Milky Way (9/25/93, p.
Later came a competing hypothesis that the dark matter consists of large bodies of normal cold matter, called MAssive Compact Halo Objects, or MACHOs.
In analyzing the first 2 years' worth of data from their continuing search, the researchers found seven lensing events that they ascribe to assemblages of dark matter known as Massive Compact Halo Objects (MACHOs).
The studies, based on nightly scans of millions of stars in the nearby Large Magellanic Cloud (LMC) galaxy, suggest that the Milky Way's periphery contains dense pieces of dark matter called Massive Compact Halo Objects, or MACHOs.