GENERAL KNOWLEDGE

Detailed explanation-1: -Earth revolves in orbit around the sun in 365 days, 6 hours, 9 minutes with reference to the stars, at a speed ranging from 29.29 to 30.29 km/s. The 6 hours, 9 minutes adds up to about an extra day every fourth year, which is designated a leap year, with the extra day added as February 29th.

Detailed explanation-2: -In 1543, Nicolaus Copernicus detailed his radical theory of the Universe in which the Earth, along with the other planets, rotated around the Sun. His theory took more than a century to become widely accepted.

Detailed explanation-3: -The Earth revolves around the Sun because gravity keeps it in a roughly circular orbit around the Sun.

Detailed explanation-4: -Earth rotates around its axis at a rate of about 1, 600 kilometers (1, 000 miles) an hour. It revolves around the sun at a rate of 107, 800 kilometers (67, 000 miles) an hour. Planets are not the only round objects that rotate. Amusement park rides, such as Ferris wheels or carousels, also rotate.