Multiple choice general knowledge culture Who had first rightly calculated the time taken by the earth to orbit the Sun? Bhaskaracharya Smart Galileo Aryabhatta Reveal answer Fill a bubble to check yourself A Correct answer Explanation Bhaskaracharya (Bhaskara II), the 12th-century Indian mathematician-astronomer, accurately calculated the time taken by Earth to orbit the Sun as 365.258756 days, remarkably close to the modern value of 365.256 days.