- Earth - Wikipedia
Earth is the third planet from the Sun and the only astronomical object known to harbor life This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water Almost all of Earth's water is contained in its global ocean, covering 70 8% of Earth's crust
- History of Earth - Wikipedia
The history of Earth is divided into four great eons, starting 4,540 mya with the formation of the planet Each eon saw the most significant changes in Earth's composition, climate and life Each eon is subsequently divided into eras, which in turn are divided into periods, which are further divided into epochs
- Earth - Simple English Wikipedia, the free encyclopedia
Earth is the third planet from the Sun in the Solar System It is one of four rocky planets on the inner side of the Solar System The other three are Mercury, Venus, and Mars Earth is the only planet known to have life on it Surface temp The Earth formed about 4 6 billion years ago [29][30]
- Earth | Definition, Size, Composition, Temperature, Mass, Facts . . .
Earth, third planet from the Sun and the fifth largest planet in the solar system in terms of size and mass Its single most outstanding feature is that its near-surface environments are the only places in the universe known to harbor life
- Location of Earth - Wikipedia
Knowledge of the location of Earth has been shaped by 400 years of telescopic observations, and has expanded radically since the start of the 20th century Initially, Earth was believed to be the center of the Universe, which consisted only of those planets visible with the naked eye and an outlying sphere of fixed stars [1] After the acceptance of the heliocentric model in the 17th century
- Age of Earth - Wikipedia
The age of Earth is estimated to be 4 54 ± 0 05 billion years [1][2][3][4] This age may represent the age of Earth 's accretion, or core formation, or of the material from which Earth formed [2]
- Structure of the Earth - Simple English Wikipedia, the free encyclopedia
The Earth has an outer solid layer called the crust, a highly viscous layer called the mantle, a liquid layer that is the outer part of the core, called the outer core, and a solid center called the inner core
- Facts About Earth - Science@NASA
Earth – our home planet – is the third planet from the Sun, and the fifth largest planet It's the only place we know of inhabited by living things While Earth is only the fifth largest planet in the solar system, it is the only world in our solar system with liquid water on the surface
|