By that logic, I would expect China to have started their first space program while we were still busy burning witches...
Edit: You all probably know what I'm talking about, but I should add that by Christianity, I meant the Catholic church/inquisition during middle-ages in Europe (the time of "heretics" burning and destroying everything that didn't agree with the general doctrine, aka anything that could have been a scientific breakthrough)
The notion that "Christianity cost us 1000 years of potential scientific progress" is incorrect. It's rooted in what's now called "conflict thesis" -- that is, the idea that Religion and Science are opposed to one another. This view is outdated. You may be interested in these previous posts by u/restricteddata on the topic:
You may be interested in these past answers on the subject:
Current general academic consensus seems to be that Christianity did not "cost us a thousand years of scientific progress".
There is an excellent answer by /u/reliable_information in the FAQ:
I don't know how to link to the specific comment, but it's the top comment, and there is some other good information in the rest of the thread.