Geology of solar terrestrial planets Earth, and Mars) have substantial atmospheres; all have impact craters and tectonic surface features such as rift valleys and volcanoes. The term "inner planet" should not be confused with "inferior planet", which refers to any planet that is closer to the Sun than the observer's planet is, but usually refers to Mercury and Venus. The Solar System is believed to have formed according to the nebular hypothesis, first proposed in 1755 by Immanuel Kant and independently formulated by Pierre-Simon Laplace. This theory holds that 4.6 billion years ago the Solar System formed from the gravitational collapse of a giant molecular
Sustain Our Planet Sustain Our Planet Sustain Our Planet is a consulting firm that provides carbon calculation and carbon offset consulting to individuals, schools and businesses, focusing on education and greenhouse gas emissions reduction. Sustain Our Planet was formed in 2007 to provide carbon calculation and offset consulting. The company’s carbon calculator allows individuals and businesses to identify their carbon footprint, track it over time and offset it to become carbon neutral. In 2008, Sustain Our Planet expanded its product portfolio and formed its green consulting division to provide environmental services to businesses, energy providers, schools, and cities. The consulting division specializes in