Live coverage: Proton lifts off with U.S.-built satellite for Asian company

Putting on a holiday light show for Southern California and much of the desert southwest, a SpaceX Falcon 9 rocket fired into a twilight sky from the Pacific coastline Friday night to add 10 new satellites to Iridium’s upgraded communications network.

Iran’s second try in less than a month to send a satellite into orbit apparently failed shortly after liftoff from a remote desert launch pad under daily surveillance from a fleet of commercial imaging spacecraft, according to U.S. government officials and independent analysts.

Northrop Grumman announced Monday plans to acquire Orbital ATK, a company with a portfolio ranging from satellite manufacturing and orbital servicing to launch vehicles, missile defense and munitions, for approximately $9.2 billion, a combination officials promised will lead to better products at lower prices.