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...
Full Definition of LANDMARK. 1. : an object (as a stone or tree) that marks the boundary of land. 2. a: a conspicuous object on land that marks a locality b: an anatomical structure used as a point of orientation in locating other structures. 3.: an event or development that marks a turning point or a stage. 4.xamples of LANDMARK. 1  The Golden Gate Bridge is a famous landmark in San Francisco. 2  The battlefield is a national historical landmark. 3  The moon landing is a landmark in space exploration. 4  The decision was a landmark in legal history.