Wilderness areas are parts of national parks, wildlife refuges, national forests, and the public domain. Today, there are 107.5 million acres of wilderness spanning 44 states and Puerto Rico, accounting for 4.82% of the United States. About half of that total is in the state of Alaska.
Small size. Earth is the largest of the Inner Planets, with a diameter of 12,756 km (7,926 miles). Mercury is the smallest with a diameter of 4,878 km (3,031 miles) Huge! Jupiter, the largest planet, has a diameter of 142,984 km (88,846 miles). Neptune is the smallest of the Outer Planets with a diameter of 49,532 km (30,779 miles) Have solid surfaces and thin/no atmospheres. In theory, it would be possible to stand on each of the Inner Planets, although you would only survive on Earth.
[ video ]. In fact, the asteroid is so complex that Russell and members of his team are calling it the smallest terrestrial planet.. Vesta has an iron core, notes Russell, and its surface features indicate that the asteroid is differentiated like the terrestrial planets Earth, Mercury, Mars, and Venus.Differentiation is what happens when the interior of an active planet gets hot enough to melt, separating its materials into layers.esta has an iron core, notes Russell, and its surface features indicate that the asteroid is differentiated like the terrestrial planets Earth, Mercury, Mars, and Venus.