Редактирование: Christopher Altman (раздел)

==NASA Breakthrough Propulsion Physics==
With fellow [[Starlab]] alumni Marc Milis and [[Walter de Brouwer]], Altman serves as director for the Tau Zero Foundation for Interstellar Spaceflight,<ref>[https://lifeboat.com/ex/bios.walter.de.brouwer Lifeboat Foundation Bios: Dr. Walter De Brouwer]</ref> successor to the NASA Breakthrough Propulsion Physics Program. The space agency established the program to study proposals for revolutionary methods of spacecraft propulsion that would allow for interstellar spaceflight, including those that might require substantive physics breakthroughs before they could be realized.

===Frontiers of Propulsion Science===
In 2009, the organization published ''Frontiers of Propulsion Science'',<ref>[http://blog.nss.org/frontiers-of-propulsion-science-by-marc-g-millis-and-eric-w-davis/ Frontiers of Propulsion Science by Marc G. Millis and Eric W. Davis]</ref><ref>[https://arc.aiaa.org/doi/book/10.2514/4.479953 Progress in Astronautics and Aeronautics: Frontiers of Propulsion Science]. American Assocation of Astronautics and Aeronautics.</ref> a comprehensive summary of research advances to date. In April 2017, NASA awarded the organization a USD $500k grant to conduct a comprehensive review of the field: ''Interstellar Propulsion Review''.<ref>[https://tauzero.aero/nasa-awards-grant-to-tau-zero/ NASA Awards Grant to Tau Zero Foundation]. Tau Zero Interstellar Spaceflight Foundation.</ref><ref>[https://www.centauri-dreams.org/2017/05/01/nasa-grant-award-to-tau-zero-foundation/ NASA Grant Awarded to Tau Zero Interstellar Foundation]. Centauri Dreams.</ref>
[[File:NASA_Commercial_Crew_Partners.jpg|border|thumb|300x300px|<small style="text-align: left">Commercial crew partners Boeing and SpaceX are testing new spacecraft for launch in Q3–Q4 2018</small>]]
[[File:NASA_orange_astronaut_suit.png|border|thumb|300x300px|<small style="text-align: left">Emergency egress spacesuit (ACES) developed for the NASA Commercial Crew program</small>]]
[[File:BFR_ISS_Spacex_3840_x_2160.jpg|border|thumb|300x300px|<small style="text-align: left">Currently under development for future commercial crew missions: the SpaceX BFR, seen here docking with the International Space Station, and [[Axiom Space|Axiom Station]] ('''below'''), commercial successor to the ISS (''Concept art'')</small>]]
[[File:Axiom.png|border|right|frameless|308x308px]]