The idea is that the matter we see does not have enough gravitational pull to keep galaxies together.
VOA: special.2009.07.21
Robert E.Lee needed those roads to pull his army together quickly.
VOA: special.2009.11.05
four-man bobsled driver. "I'm just elated." "And I can't tell you how proud I am of Holcomb and the gang and for Steve to pull it together and hold it together in just his second Olympic Games.
VOA: standard.2010.02.28
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