The universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
Rivers of the World
RiversAbout 70% of Earth surface is covered with water and is found in rivers, lakes, streams and oceans. A river is a flowing, moving stream of water. Usually a river feeds water into an ocean, lake, pond, or even another river. Rivers can vary in size and there is no hard definition or rule on how big a flow of water must be to be categorized as a river. Water from a river can come from rain, melting snow, lakes, ponds, or even glaciers. Rivers flow downhill from their source. They are cons...
Rivers of the World
RiversAbout 70% of Earth surface is covered with water and is found in rivers, lakes, streams and oceans. A river is a flowing, moving stream of water. Usually a river feeds water into an ocean, lake, pond, or even another river. Rivers can vary in size and there is no hard definition or rule on how big a flow of water must be to be categorized as a river. Water from a river can come from rain, melting snow, lakes, ponds, or even glaciers. Rivers flow downhill from their source. They are cons...
Mountains of The World
List of highest mountains on EarthCurrently, There are at least 108 mountains on Earth with elevations of 7,200 metres (23,622 ft) or greater above sea level. The vast majority of these mountains are located on the edge of the Indian and Eurasian plates in China, India, Nepal and Pakistan. Figure demonstrating the concept of topographic prominence: The prominence of a peak is the height of the peak's summit above the lowest contour line encircling it and no higher summit. For example, ve...
Mountains of The World
List of highest mountains on EarthCurrently, There are at least 108 mountains on Earth with elevations of 7,200 metres (23,622 ft) or greater above sea level. The vast majority of these mountains are located on the edge of the Indian and Eurasian plates in China, India, Nepal and Pakistan. Figure demonstrating the concept of topographic prominence: The prominence of a peak is the height of the peak's summit above the lowest contour line encircling it and no higher summit. For example, ve...
Continents
The Continents of the WorldAfrica, the Americas, Antarctica, Asia, Australia, together with Oceania, and Europe are considered to be continents. The word continent is used to differentiate between various large land areas of Earth into which all the land surface of the planet is divided. The term refers to the 'mountain top' regions of the Earth not flooded by water, dry land. The level of the surrounding water ultimately defines the shape and borders of continents. More water impli...
Continents
The Continents of the WorldAfrica, the Americas, Antarctica, Asia, Australia, together with Oceania, and Europe are considered to be continents. The word continent is used to differentiate between various large land areas of Earth into which all the land surface of the planet is divided. The term refers to the 'mountain top' regions of the Earth not flooded by water, dry land. The level of the surrounding water ultimately defines the shape and borders of continents. More water impli...
Earth
Our PlanetEarth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of monikers. Every other solar system planet was named for a Greek or Roman deity, but for at least a thousand years, some cultures have de...
Earth
Our PlanetEarth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of monikers. Every other solar system planet was named for a Greek or Roman deity, but for at least a thousand years, some cultures have de...
Universe
Universe and its existenceThe universe is literally everything, the sum of all existence. It includes all matter, like stars and galaxies. The universe also includes all radiation and all other forms of energy. No matter where or when you exist, you are a part of the universe, as is everything you experience. There is nothing outside the universe, because anything that exists is automatically included in the definition of the universe. Scientists do not know what came before the Big Bang. How...
Universe
Universe and its existenceThe universe is literally everything, the sum of all existence. It includes all matter, like stars and galaxies. The universe also includes all radiation and all other forms of energy. No matter where or when you exist, you are a part of the universe, as is everything you experience. There is nothing outside the universe, because anything that exists is automatically included in the definition of the universe. Scientists do not know what came before the Big Bang. How...
