On October 30, 1953, President Dwight D. Eisenhower signed a secret document mandating that the United States maintain and develop its nuclear weapons arsenal.
Just four years later, on this same date, the Soviet Union detonated the largest explosive device ever, Tsar Bomba. The estimated yield was 50 megatons, which is almost one-and-a-half times the power of the combined yield of the two bombs detonated over Hiroshima and Nagasaki. For one brief moment, Tsar Bomba was 1.4% as energetic as the Sun. Yet Tsar Bomba was one of the cleanest—least fallout relative to yield—nuclear weapons tests. We wrote more about this nuclear test in “Measuring the Unthinkable” and included a video of the detonation there.
Today is also the anniversary of the launch of space shuttle Challenger’s last successful mission, STS-61A. The 1985 Spacelab mission was astronaut Guion Bluford’s second. His first mission two years earlier was the first time an African-American had been to space. The only woman on Challenger’s last successful crew, the first crew of eight, was Bonnie Dunbar. STS-61A was her first of five shuttle missions. In addition to performing science experiments, the crew launched the Global Low Orbiting Messaging Relay satellite, a proof-of-concept for military communications. Challenger’s last landing was at Edwards Air Force Base on November 6, 1985.
We have several other posts that talk about Challenger, including “Apollo 1, Challenger, Columbia” and “25th Anniversary of the Challenger Accident.” In addition, we have guest posts by Roger Boisjoly, Allan McDonald, and Richard Cook, three engineers involved in the launch that day.
Today is also the fourth anniversary of the death of Washoe, a chimpanzee and the first non-human to communicate with American Sign Language. She was originally captured for use in the space program but ended up in Nevada, then the University of Oklahoma, and later Central Washington University She died at the age of 42. The New York Times obituary notes that not all scientists agree that Washoe and others like her were really communicating, not without signals and prompts from her trainers. But Washoe opened up a lot of questions and led to a great deal of additional research into learning and communication across species. See our birthday post for Colo, the first gorilla born in captivity HERE.
On a cheerier note and with a linguistic, if not exactly topical connection, to the usual subject matter of Lofty Ambitions, today is Grace Slick’s 72nd birthday. Born Grace Barnett Wing in Evanston, Illinois, where Anna’s mother grew up, Grace Slick joined Jefferson Airplane in 1966. After that band split up, Grace and some bandmates formed Jefferson Starship. In 2006, Virgin America Airlines named its first aircraft Jefferson Airplane.
Virgin Galactic, another entity in the Virgin conglomerate, is now booking seats. If you want to go to space, all you need is a $20,000 deposit and the full $200,000 when they’re ready to launch. Click HERE to reserve a spot. We wrote about one of their most recent hires, Mike Moses, the shuttle program’s Launch Integration Manager in “I Remember California: I Remember Mike Moses.”