Blue Origin is firing up its new rocket engine as Bigelow is talking about inflatable lunar stations. Then, the recent LIGO announcement and some background on Project Gemini.

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Links and Show Notes

Blue Origin conducts first hot-fire test of BE-4 engine - SpaceFlight Insider

Blue Origin just sent a jolt through the aerospace industry | Ars Technica

Bigelow Aerospace wants to put an inflatable space habitat in orbit around the Moon - The Verge

NASA Jet Propulsion Laboratory Blog | Planet Nine

The Search for Planet Nine: Theory

The Search for Planet Nine: Planet Nine: where are you? (part 1)

Gravitational waves have let us see huge neutron stars colliding | New Scientist

NASA Missions Catch First Light from a Gravitational-Wave Event | NASA