WASHINGTON — Launch of the SES-4 commercial communications satellite scheduled for Jan. 29 has been delayed again until further notice, International Launch Services (ILS) of Reston, Va., said in a Jan. 27 press release.

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Dan Leone is the NASA reporter for SpaceNews, where he also covers other civilian-run U.S. government space programs and a growing number of entrepreneurial space companies. He joined SpaceNews in 2011.Dan earned a bachelor's degree in public communications...