25 inches in circumference would be the largest normal (not  hydrocephalic) head.    The world record holder is Rick Walters.
Trending Now. Answers. Best Answer: 365 days, 5 hours, 49 minutes and 1.20 seconds (or 365.242375 days). The distance is not so easy; the Earth doesn't travel in a circle through space. With relation to the Sun, it does, but since the Sun is moving, the Earth moves in a helixal orbit.
The Earth orbits, on average, 93 million miles (149,600,000 km) from the Sun (this distance is defined as one Astronomical Unit (AU)), taking one year to complete an orbit. The Earth revolves around the Sun at a speed of about 18.5 miles/sec (30 km/sec).