Earth | |
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The Earth | |
Name of Planet | Earth |
Discovered by | Humanity |
Date of Discovery | Antiquity |
Atmospheric Makeup | 78% nitrogen, 20.5% oxygen 0.9% argon 0.04% carbon dioxide |
Distance from Sun | 93 million miles/150 million km from the Sun (1 astronomical unit) |
Diameter | 7926 miles 12,742 kilometers |
Volume | 1 trillion cubic kilometers |
Axial tilt | 23.4 degrees |
Orbit | 365.25 (1 year) Earthen days |
Position in Solar System | Third planet from Sun |
Surface Features | 29.2% land 70.8% water |
Albedo | (geometric) 0.367 (bond) 0.306 |
Aphelion | 95.06 million miles 152 million km |
Perihelion | 91.936 million miles 147 million km |
Mass of Planet | 5.974 x 10^24 kg |
Escape Velocity | 11.12 kilometers/second |
Earth[]
About 70% of the surface is covered in salt water oceans, and the remainder consists of continents and islands. There is significant interaction between the earth and its space environment. The relatively large moon provides ocean tides and has gradually modified the length of the planet's rotation period. A cometary bombardment during the early history of the planet is believed to have formed the oceans. Later, asteroid impacts are understood to have caused significant changes to the surface environment. Changes in the orbit of the planet may also be responsible for the ice ages that have covered significant portions of the surface in glacial sheets.
The Earth's natural orbiting Satellites are Luna and Cruithne.
The earth is where we live, if the earth were not in the place it is on the solar planet, we would not exist.
History[]
Earth history refers to the development of planet Earth and covers about 4.5 billion years—approximately one-third of the age of the universe, of the 13,700 Ma estimated since the Big Bang—from its formation to the present day.
Curiosities[]
- The Earth is actually not spherical.
- Coral reefs are the largest living structure on Earth.
- The interior of the Earth is not solid.
- Our planet is like a ball that bulges and returns to its shape.
- The largest ice sheet on Earth is located in Antarctica.
- The Moon is moving away from the Earth.[1]
References[]
- NASA's Earth fact sheet
- Discovering the Essential Universe (Second Edition) by Neil F. Comins (2001)
space.about.com - Earth - Pictures and Astronomy Facts
External links[]
- WikiSatellite view of Earth at WikiMapia
- USGS Geomagnetism Program
- Overview of the Seismic Structure of Earth PDF
- NASA Earth Observatory
- Beautiful Views of Planet Earth Pictures of Earth from space
- Java 3D Earth's Globe
- Projectshum.org's Earth fact file (for younger folk)
- MySolarSystem.com - Earth Facts about Earth and the moon.
- https://www.google.com/earth/ Like a map of Earth
- https://en.wikipedia.org/wiki/Earth You know it
Gallery[]
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The Sun · Mercury · Venus · Earth · Mars · Ceres* · Jupiter · Saturn · Uranus · Neptune · Pluto* · Haumea* · Makemake* · Eris* · Dwarf Planet Candidates* | |||
Planets · Dwarf Planets · Moons: Terran · Martian · Asteroidal
· Jovian · Saturnian · Uranian · Neptunian · Plutonian · Eridian | |||
'Ceres * Pluto * Haumea * Makemake * Eris | |||
Small bodies: Meteoroids · Asteroids (Asteroid belt) · Centaurs · TNOs (Kuiper belt/Scattered disc) · Comets (Oort Cloud) | |||
Hypothetical Bodies: Vulcan · Planet 9 · Planet 10 · Tyche · Nibiru · Nemesis · more... | |||
Planets with '*' are dwarf planets. | |||
See also astronomical objects and the solar system's list of objects, sorted by radius or mass. |
References[]
Continents[]
- North America
- South America
- Argentina
- Bolivia
- Brazil
- Peru
- Urugray
- Venezuela
- Europe
- Asia
- Africa
- Oceania