Astra Space, Inc. (NasdaqCM:ASTR) is considering selling a 51% stake in its inspace propulsion business, among other strategic sale options, according to people familiar with the matter. The company would seek to value that unit at more than $100 million in that scenario, one of the people added. A second person said Astra is weighing the potential sale of various parts of its business, including its equipment, parts of its rocket factory and its in-space propulsion division.