Inquiring Mind Wants To Know

I read this somewhere:The Chinese government discovered thousands years old Sanskrit documents in Tibet and sent them to the University of Chandrigarh in India for translation...they were found to contain the knowledge to build interstellar spaceships, according to the University's Dr Ruth Reyna...Dr Reyna revealed that these ships were known as "Astras" and it was claimed they could fly to any planet...the question is how the ancients knew how to built spaceships?