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1 day ago · 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. Learn more about development and composition of Earth in this article.
- The Interior
More than 90 percent of Earth ’s mass is composed of iron,...
- Planetary Differentiation
Earth - Differentiation, Formation, Structure: Once hot,...
- The Atmosphere
Earth - Atmosphere, Climate, Ozone: Earth is surrounded by a...
- Basic Planetary Data
Earth - Planet, Atmosphere, Geology: The mean distance of...
- The Outer Shell
Earth - Core, Crust, Mantle: Earth’s outermost, rigid, rocky...
- Accretion, Formation, Core
Earth - Accretion, Formation, Core: As the gas making up the...
- Structure, Composition, Development
Earth - Structure, Composition, Development: The origin of...
- Impacts, Planetesimals, Craters
Earth - Impacts, Planetesimals, Craters: During its...
- The Interior
3 days ago · Earth - Structure, Composition, Development: The origin of Earth in its present form has long been the subject of intellectual interest, but since the mid-20th century scientists have made particularly significant advances both in concepts and in measurements.
2 days ago · More than 90 percent of Earth ’s mass is composed of iron, oxygen, silicon, and magnesium, elements that can form the crystalline minerals known as silicates. Nevertheless, in chemical and mineralogical composition, as in physical properties, Earth is far from homogeneous.
2 days ago · The history of Earth concerns the development of planet Earth from its formation to the present day. [1] [2] Nearly all branches of natural science have contributed to understanding of the main events of Earth's past, characterized by constant geological change and biological evolution .
18 hours ago · Earth’s magnetic field yanks at this solid ball of hot metal, making it spin. At the same time, the gravity and flow of the fluid outer core and mantle drag at the core. Over many decades, the ...
1 day ago · The three major constituents of Earth's atmosphere are nitrogen, oxygen, and argon. Water vapor accounts for roughly 0.25% of the atmosphere by mass.
Jun 26, 2024 · Earth orbits the sun at a distance of 150 million kilometres and the sun orbits the centre of the Milky Way. Specifically, we are in the Orion arm, around 26,500 light years from the centre. The ...
