PREVIEW: Colleague Bob Zimmerman reports succinctly on the failure of the generously subsidized ESA to test a Grasshopper booster after years of delays.

The John Batchelor Show - Podcast készítő John Batchelor - Szerdák

PREVIEW: Colleague Bob Zimmerman reports succinctly on the failure of the generously subsidized ESA to test a Grasshopper booster after years of delays. 1953

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