It takes 687 days for Mars to orbit the Sun, which is 1.88 Earth years. 1.88 x 1.88 = 3.5378 which has a cube root of 1.5237 meaning that on average Mars is 1.5237 times the Earth's average distance from the Sun.
boulder definition: The definition of a boulder is a large, smooth rock. (noun) When you build a retaining wall and use a large rock in the wall, this rock is an example of a boulder. A rock that has been detached from the earth by erosion or for ot...
1 (Abbr. Mt. or Mtn.) A natural elevation of the earth's surface having considerable mass, generally steep sides, and a height greater than that of a hill. 2  A large heap: a mountain of laundry.  A huge quantity: a mountain of trouble.