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Title: Mystery of the Hidden Cosmos [Complex Dark Matter]

Scientists know there must be more matter in the universe than what is visible. Searches for this dark matter have focused on a single unseen particle, but decades of experiments have been unsuccessful at finding it. Exotic possibilities for dark matter are looking increasingly plausible. Rather than just one particle, dark matter could contain an entire world of particles and forces that barely interact with normal matter. Complex dark matter could form dark atoms and molecules and even clump together to make hidden galactic disks that overlap with the spiral arms of the Milky Way and other galaxies. Experiments are under way to search for evidence of such a dark sector.
Authors:
 [1] ;  [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
OSTI Identifier:
1235042
Report Number(s):
FERMILAB-FN--1003-T
Journal ID: ISSN 0036-8733; scientificamerican0715-32
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Scientific American
Additional Journal Information:
Journal Volume: 313; Journal Issue: 1; Journal ID: ISSN 0036-8733
Publisher:
Nature Publishing Group
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS