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The competition heats up: Vulcan Aerospace now says that construction of its Stratolaunch airplane, the largest ever to fly, will be completed by the end of this year.
Assembly of the plane is 76 percent complete, with the engines, landing gear and one tail section still to be installed. The plane is expected to be finished before the end of the year. Commercial services are expected to begin before 2020.
They still have not determined the second stage rocket they will use with this mother ship to launch satellites, which leaves me increasingly skeptical about their future. It is very late in the game to still not know this detail.