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Introduction References & Edit History Related Topics

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Earth from space. Full-hemisphere views of the Earth showing Hurricane Linda at its peak approaching Baja California on 1997 September 11.

What Is Earth’s Velocity?

Solar system illustration. (planets; sun)

Why Are Planets Round?

Remarkable new details of Pluto's largest moon Charon are revealed in this image from New Horizons' Long Range Reconnaissance Imager (LORRI), taken late on July 13, 2015 from a distance of 289,000 miles

Why Is Pluto No Longer a Planet?

Astronomical Observatory of the Mojon del Trigo. Long exposure using the star trail technique. Sierra Nevada National Park, in the province of Granada, Andalusia.

Is Earth Going to Change the Direction in Which It Rotates?

Solar system illustration. (Sun; planets)

A Model of the Cosmos

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Andrew Jackson delivering a speech while on his way to Washington, D.C., for his inauguration in 1829. From Harper's Weekly, 1881.

5 Remarkably Close U.S. Presidential Elections

Martin Luther King, Jr.

Why We Celebrate MLK Day

Abstract vector hi speed internet technology background

History of Technology Timeline

Washington, D.C. locator map.

What State Is Washington, D.C. In?

Malayan Leaf Frog - Megophrys nasuta

9 Animals That Look Like Leaves

Prince. musician Prince (Prince Rogers Nelson). Prince WELCOME 2 AMERICA tour. Exclusive North American Performances, 2010-11

7 Celebrities You Didn’t Know Were Inventors

Alcoholic beverages bottles at Host 2013, international exhibition of the hospitality industry on OCTOBER 18, 2013 in Milan.

Why Is Alcohol Measured by Proof?

seif: References & Edit History

Article Contributors

Primary Contributors

The Editors of Encyclopaedia Britannica

Other Encyclopedia Britannica Contributors

Article History

Type	Description	Contributor	Date
	Invalidated site: Academia - Morphology of linear seif dunes.	Yamini Chauhan	Jul 16, 2024
	Add new Web site: Academia - Morphology of linear seif dunes.	Emily Rodriguez	Feb 07, 2022
	Add new Web site: National Park Service - Geology of Sand Dunes.	Gloria Lotha	Jan 25, 2011
	Article added to new online database.	The Editors of Encyclopaedia Britannica	Jul 20, 1998