"There is official history and unofficial history. Official history only noted that the Wright Brothers flew the first plane in 1903," said Mr Bodas. (Ancient Indian Science Should Have Been Discussed Earlier, Says Noted Scientist at Indian Science Congress)
An online petition by a scientist at the NASA research centre, signed by over 200 other scientists had demanded that the scheduled lecture be cancelled as it mixes mythology with science and misleads people.
"I haven't heard of any online petition. I'll cross the bridge when I get there. Once I receive it, I'll give it thought", Mr Bodas said.
He cited an ancient Indian treatise, the 'Vaimanika Prakaranam' as the source of the text and said that most of its principles have been forgotten with the passage of time.
The symposium on 'Ancient Sciences through Sanskrit' was a first in 102 years of the Indian Science Congress. Eight speakers were invited to deliver speeches on topics ranging from ancient Indian botany and nueroscience of yoga to ancient Indian aviation technology and ancient Indian surgery.