I’m Anthony Colangelo.

Four members of the House of Representatives sent letters to DARPA and the Pentagon this week to file a complaint about a program in conflict with the 2010 National Space Policy. It’s a situation reminiscent of the debate over commercial use of retired ICBMs as low-cost launch vehicles, except this time, Orbital ATK is on the other side. I discuss the current issues and how their resolution may affect future policy decisions.

SpaceX is off to a strong start in 2017 with a very successful launch of Iridium-1 and a promising next few weeks. I also discuss the very interesting story developing between NASA, Boeing, and Russia regarding Soyuz flights to the ISS.

While we don’t yet have hard details on which direction NASA programs are headed during the Trump administration, we have started to get some hints. The leadership of the Congressional subcommittees that NASA depends on will be largely unchanged, and Boeing and SpaceX were each promised 4 more Commercial Crew flights. I also talk a little bit about how the Air Force One and F-35 situations apply to NASA programs.

SpaceX wrapped up their investigation into the Amos-6 explosion, and the news is mixed. I discuss their findings, their path back to flight, and some other 2016-2017 odds and ends.

Inmarsat, under regulatory pressure to get flying, decided to take a mid-2017 launch slot on Ariane 5, moving away from Falcon Heavy. Everyone thinks it’s a big deal, but for the wrong reason. And SpaceX’s Commercial Crew flights have been delayed, but we did find out that NASA’s Safety Technical Review Board approved their plan to load crew before fueling. That is a big deal.

A Progress launch failed on its way to the ISS, so I discuss how this may affect the politics of the ISS and NASA going forward. And then I get into some thoughts on satellite servicing in general, and specifically surrounding Restore-L and Orbital ATK’s Mission Extension Vehicle. This episode of Main Engine Cut Off is brought to you by 3 executive producers—@spacepat_o, Matt Giraitis, and one anonymous—and 25 other supporters on Patreon.

Tory Bruno took to the stage to announce RocketBuilder, their new way to market and sell Atlas V launch services. I discuss my initial thoughts about it and what the announcement means for ULA going forward in the commercial market.

All signs point to SpaceX nearing a return-to-flight mission for Falcon 9. I discuss what to watch for in the months ahead, and read some email.

Following up on last show’s topic, there are signs that NASA may be moving away from Orion in the future. I discuss how I see NASA modernizing their exploration roadmap, politically, in the next administration.

NASA released an RFI for small scientific payloads bound for the lunar surface, meant to “address strategic knowledge gaps” associated with human missions to the Moon. I talk about how this could indicate a shift of the SLS/Orion roadmap, and how NASA may be focusing on lunar surface missions in order to build more political capital for the program of record.