An archival NASA photo of Jack Parsons, at a test site, with a Jet Assisted Take-Off canister, a technology he helped develop.
lt's an interesting article, but it has quite a few typographical errors, and unfortunately not a few mistakes, some of which are pointed out in the 23 comments that were posted on the piece when I accessed it. For example, it is apparently not true that NASA ignores Parsons' role in its past. On one of the alleged mistakes, however, it appears that the article's author got it right: Parsons believed his magic had summoned his new girlfriend, Marjorie Cameron. (See the Wikipedia piece referenced below.)
Here is an interesting sentence from the piece that is not disputed by any of the commenters: "Parsons came to believe in magic, a force that he felt could be explained through quantum physics, as espoused by Thelema's founder Aleister Crowley."
There are at least a couple of biographies of Parsons: The Wired piece cites biographer George Pendle. Another Parsons bio, Sex and Rockets: The Occult World of Jack Parsons by John Carter, has an introduction by Robert Anton Wilson.
Wikipedia has a long bio of Parsons, with 190 footnotes. I was amazed to see that Parsons used music by Sergei Prokofiev to accompany one of his magic rituals; I'm a huge Prokofiev fan.