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- Also Known As: Gaea, The World, The Big Blue Marble, Terra
- Age: 4.54 BYA (approximate) Geography: Earth Facts
- Mean Diameter: 7,926 MilesHypertextbook: Earth's Diameter
- Mean Circumference: 24,880.616 miles Geography: Earth Facts
- Surface Land Area: 92,547,025.4 square miles Geography: Earth Facts
- Surface Water Area: 224,394,021 square miles Geography: Earth Facts
- Mass: 6.59182164 21 tons Geography: Earth Facts
- Escape Velocity: 6.95065816 miles per second Geography: Earth Facts
- Nitrogen
- Oxygen
- Argon
- Carbon Dioxide
- Trace elements and compounds
- Mean Distance from the sun: 93 million miles Geography: Earth Facts
- Orbital Period: 365.256366 days Geography: Earth Facts
- Orbital Eccentricity: 0.016710219 Geography: Earth Facts
- Axial Inclination: 23.439281° Geography: Earth Facts
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Earth is the third planet from the sun and is the largest of the inner planets in the solar system in both diameter and mass. The only planet in the Universe on which life is known to exist, Earth is home to millions of species, including at least one sentient life form, Homo sapiens sapiens.
At the center of the Earth is a solid iron core, surrounded by magnetic liquid and a thick layer of mantle.
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An Abundance of Liquid Water
About 71% of Earth's surface is covered in liquid water, mostly in the form of oceans. These seas not only help drive the atmosphere, they lubricate the crust of the planet, enabling the motion of tectonic plates. The movement of the plates constantly recycles the mineral and biological material available on the planet and in turn, shapes climate and makes ecosystems possible.Guardian Moon
Earth has one natural satellite, the moon, also known as Luna. This large satellite is believed to have been created from accreted orbital ejecta from the collision with Earth of a small planetoid early in the history of the solar system. The moon's gravity has attracted asteroids, comets, and meteors to its surface than may have otherwise struck Earth.
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Earth Questions
How do I see my house on Google Earth? 1 AnswerSelect "Fly To" in the upper left-hand corner of the screen, then enter your street address and postal code: 1600 pennsylvania ave, 20006 and Google Earth will ... read more
Does Earth 2100 provide direction for our society? 2 AnswersNot at all. It provides examples of what could go wrong, but probably won't. A lot of the things on the program do not even have CONCLUSIVE evidence to back it ... read more
I missed Earth 2100 ...any video links out there? 1 Answerhttp://television.aol.com/show/earth-2100/10508816/full-episodes This link will take you to full online episodes of Earth 2100 in case you missed an episode or... read more
Does any know where I can watch ABC's Earth 2100? 2 Answershttp://television.aol.com/show/earth-2100/10508816/full-episodes This link will take you to full online episodes of Earth 2100 in case you missed an episode or... read more
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Earth Appreciation
- EarthHour.org: Climate Change Activism
Books
- ArcaMax Publishing: A Journey to the Center of the Earth - Jules Verne
- Amazon.com: Pale Blue Dot: A Vision of the Human Future in Space - Carl Sagan
- Amazon.com: Earth - James F Luhr
- Amazon.com: Planet Earth: As You've Never Seen It Before - Alastair Fothergill
- This page was created by Keithmc, a Part Time Guide in the Mahalo Greenhouse (see the original), and curated by Mike.
- If you'd like to help us create the best spam free search results on the Internet, apply to be a Part Time Guide!</em>
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On Twitter Powered by Twitter
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Ready for "peace on earth". Especially my zip code.
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Need new woodshed/toolshed in the spring. Maybe I'll find something in Mother Earth News' archives: http://bit.ly/4YOQDw
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Watching Planet Earth... #FTW
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I'd like to make myself believe that planet Earth turns slowly...<3
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I just took "What Justin Bieber video should you be in?" and got: Down To Earth! Try it: http://tinyurl.com/yakq88j
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