I somewhere read that ancient Indian science was so advanced even in 2000 B.C. (or may be even before this) that Indian scientist and mathematicians calculated the value of distance between sun and Earth. They even found the value of $\pi$. They made a piller made of iron which resists rusting.They did even more. It is said that they wrote all their discoveries in scriptures which can be found even today. They called it Vedic science.
So my question is: Is it possible that they could have found and done all these things? If yes, how? If no, how?
I am not claiming that they did those things. But it has confused me for so long.
Here are some sites in the favour:
And here are some against it :