The solar system is a 4.57 billion years old planetary system that includes a central star and all the natural space objects (planets) orbiting the Sun.

Since Earth’s creation, oceans, continents and life have emerged. From evolution to extinction, here are the geological events and history of Earth timeline

2 theories exist for the origin of water on Earth: Did comets transport water? Or was there degassing from volcanoes from rocks existing within the crust?

The Big Bang theory phases describes how the universe was formed. From singularity to quarks, to atoms and galaxies…this is the formation of the universe.

The magnetic field gives us a layer out in space called the magnetosphere. Without it, Earth would be exposed to solar and cosmic radiation.

Long ago, oxygen filled the oceans. It mixed with iron which reacted by rusting. The seafloor collected rusted iron called banded iron formation (BIF).

The Cenozoic Era started with the extinction of dinosaurs and moved into the age of mammals.This led to the diversification and increase in size of mammals.

Working in ecology is seeing conservation in action. These 7 questions and answers evaluate ecologists career for salary, job duties and potential employers.

Hydrogeologists are groundwater specialists who focus on how soil and rock relate to groundwater. This includes the transportation of water into the surface.

Planet Venus neighbors the Earth. It’s the second planet closest the sun. Other facts include its counterclockwise rotation and how it rains sulfuric acid.