3. THEY KNEW THE SPEED OF LIGHT WAY BEFORE THE REST OF THE WORLD KNEW IT

A Vedic scholar by the name of Sayana discovered the speed of light back in the 14th century AD.
His quote which translates to
“With deep respect, I bow to the sun, who travels 2,202 yojanas in half a nimesha.”
A yojana is approximately 9 miles; a nimesha is 16/75 of a second.
So, 2,202 yojanas x 9 miles x 75/8 nimeshas = 185,794 miles per second which is remarkably equal to the actual value of 186 282.397 miles per second.