Long before Copernicus, Varaha Mihira discovered that Earth goes round the Sun and not vice-versa.
World's first surgeries were performed by Sushrutha (and his ancestors), several thousand years ago.
India's science was developed several thousand years ago, much before our modern science.
Even today, Ayurveda provides better cures than modern medicine for certain diseases. Pranayama and Yoga provide cure for many diseases and even prevent them. That is why many in the west are flocking to Ayurveda and doing research on Ayurveda.
See Swami Ramdev's programs on TV channels such as Aastha, Zee TV and other TV channels to learn Pranayama and Yoga, which can prevent and cure many diseases. Books, VCDs and DVDs are also available.
