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2. Earth - Wikipedia

   en.wikipedia.org/wiki/Earth

   Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution.

3. 13 Surprising Earth Day Facts That Most People Don't Know - AOL

   www.aol.com/13-surprising-earth-day-facts...

   The unofficial Earth Day flag features the Blue Marble, a famous photograph of Earth shot in space in 1972 by the Apollo 17 crew. In 2016, France set out to end food waste. Earth Day efforts shed ...

4. 25 Earth Day Facts—Plus, How To Help the Planet Today and ...

   www.aol.com/lifestyle/25-earth-day-facts-plus...

   25 Facts about Earth Day 1. Gaylord Nelson, a senator from Wisconsin, founded Earth Day in 1970 to raise public consciousness about environmental concerns such as pollution, oil spills and ...

5. 10 Surprising Facts About Earth Day - AOL

   www.aol.com/10-surprising-facts-earth-day...

   Here are 10 interesting facts about Earth Day. Earth Day was created by a senator. Gaylord Nelson, a Democratic senator from Wisconsin, was growing increasingly concerned over the state of the U.S ...

6. History of Earth - Wikipedia

   en.wikipedia.org/wiki/History_of_Earth

   The first eon in Earth's history, the Hadean, begins with the Earth's formation and is followed by the Archean eon at 3.8 Ga. [2]: 145 The oldest rocks found on Earth date to about 4.0 Ga, and the oldest detrital zircon crystals in rocks to about 4.4 Ga, [34] [35] [36] soon after the formation of the Earth's crust and the Earth itself.

7. Location of Earth - Wikipedia

   en.wikipedia.org/wiki/Location_of_Earth

   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 ]

8. 20 Earth Day facts that aren't common knowledge - AOL

   www.aol.com/news/10-earth-day-facts-might...

   Earth Day Facts (Jessica Zaccaria / Getty Images/iStockphoto) A 2015 study estimated that there are roughly 3 trillion trees on earth, give or take a few million. Since there are around 8 billion ...

9. Geography - Wikipedia

   en.wikipedia.org/wiki/Geography

   Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be. While geography is specific to Earth, many concepts can be applied more broadly to other celestial bodies in the field of planetary science. [2]