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.
Behind The Black, c/o Robert Zimmerman
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
This was Northrop Grumman’s first flight in 2020. The standings in the 2020 launch race:
1 Arianespace (Europe)
1 Rocket Lab
1 Northrop Grumman
The U.S. now leads China 5 to 3 in the national rankings. The U.S. will likely add to that lead with the planned SpaceX launch of another 60 Starlink satellites Monday.