During his two visits on the John Batchelor radio program this week, Bob Zimmerman spoke about the following topics:

Tues 8/13/13 Hr 2 Batchelor

• Air Force to shut part of its orbital space tracking system.
• ATK joins Stratolaunch.
• Serious problems with SpaceShipTwo?

Thurs 8/15/13 Hr 4 Batchelor:

• Bob’s op-ed in the WSJ on the SLS boondoggle
• Orion delays and overruns
• Sierra Nevada testing Dream Chaser crew vehicle
• SpaceX Grasshopper does sideways flight test

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And on the weekly Hotel Mars segment, David Livingston and Batchelor talked with Dr. David Brain about the  NASA’s Mars Atmosphere and Volatile Evolution Mission (MAVEN), which will launch to the Red Planet in November:  John Batchelor Hotel Mars, Wednesday, 8-14-13 | Thespaceshow’s Blog

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Here are videos of the recent Grasshopper test that Bob mentioned: