3D printing in concrete

Chronological Encyclopedia of Discoveries in Space cover

After being in print for twenty years, the Chronological Encyclopedia of Discoveries in Space, covering everything that was learned on every single space mission in the 20th century, has finally gone out of print.

I presently have my last four hardback copies available for sale. The book sold new for about $90. To get your own autographed copy of this now rare collector's item, please send a $120 check (which includes shipping) payable to Robert Zimmerman to

Behind The Black, c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652

"Useful to space buffs and generalists, comprehensive but readable, Bob Zimmerman's Encyclopedia belongs front and center on everyone's bookshelf." -- Mike Collins, Apollo 11 astronaut


"The Chronological Encylopedia of Discoveries in Space is no passionless compendium of information. Robert Zimmerman's fact-filled reports, which cover virtually every spacecraft or probe to have ventured into the heavens, relate the scientific and technical adventure of space exploration enthusiastically and with authority." -- American Scientist

An evening pause: How things will be built and manufactured in the future, on Earth and in space, though in space they probably won’t use concrete.



  • Kelly Starks

    Actually they might use concrete. McDonnel Douglas and the Shimizu corporation worked up some lunar base ideas ( http://www.shimz.co.jp/english/theme/dream/moonbase.html ), and did testing on a new concept to cast concrete made out of lunar soil in a vacume. Worked great and the Lunar soil made the best concrete they ever saw. [Course the moons pretty dry, but water is common in near Earth space.]

  • Kelly Starks

    I wonder if you could use liquid metal? Say melt the highly pure nickle Iron of a asteroid, and pump it outto lay it up to form a station or colony platform.

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