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The moving Earth.
Corel Corporation.

The Moving Earth

Even though we cannot sense it, the Earth is constantly in motion. In fact, the Earth isn't just moving, it's moving really fast! The fact that we do not feel as if we are moving led people to believe that the Earth is the stationary center of the universe for centuries.

Eventually, astronomers discovered that the only way to explain all of the motions they observed in the sky was if the Earth were really moving. From their observations of the sky, they realized that there are two components to the Earth's motion; the Earth is orbitting the Sun, and the Earth is spinning like a top.

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The Fall 2009 issue of The Earth Scientist, which includes articles on student research into building design for earthquakes and a classroom lab on the composition of the Earth’s ancient atmosphere, is available in our online store.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF