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  • Kansas Legislator Proposes Bill to Outlaw Sustainability Education
    A bill has been introduced in the Kansas legislature this week that would prohibit the promotion of ...Read more

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    Kansas Legislator Proposes Bill to Outlaw Sustainability Education

    A bill has been introduced in the Kansas legislature this week that would prohibit the promotion of sustainability. Here is a link to the one-page bill: http://www.kslegislature.org/li/b2013_14/measures/documents/hb2366_00_0000.pdf. See report on Bloomberg News.
  • Earth's Center Is 1,000 Degrees Hotter Than Previously Thought, Synchrotron X-Ray Experiment Shows
    Scientists have determined the temperature near the Earth’s center to be 6000 degrees Celsius, 1000 ...Read more

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    Earth's Center Is 1,000 Degrees Hotter Than Previously Thought, Synchrotron X-Ray Experiment Shows

    Scientists have determined the temperature near the Earth’s center to be 6000 degrees Celsius, 1000 degrees hotter than in a previous experiment run 20 years ago. These measurements confirm geophysical models that the temperature difference between the solid core and the mantle above, must be at least 1500 degrees to explain why the Earth has a magnetic field. For more information about this study, see the press release from the European Synchrotron Radiation Facility.
  • Ocean Volcanic Rocks Contain Samples of Recycled Crust
    Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials fr...Read more

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    Ocean Volcanic Rocks Contain Samples of Recycled Crust

    Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials from the early Earth’s crust. But decisive evidence for this phenomenon has proven elusive. New research from a team including Carnegie’s Erik Hauri demonstrates that oceanic volcanic rocks contain samples of recycled crust dating back to the Archean era 2.5 billion years ago. Their work is published in Nature. Oceanic crust sinks into the Earth’s mantle at so-called subduction zones, where two plates come together. Much of what happens to the crust during this journey is unknown. Model-dependent studies for how long subducted material can exist in the mantle are uncertain and evidence of very old crust returning to Earth’s surface via upwellings of magma has not been found until now. For more information about these results, see the press release from the Carnegie Institution.
This awesome image of Venus was taken by the Magellan spacecraft.
Click on image for full size
Courtesy of NASA

Discover Venus

Venus is one of the brightest objects in the sky, so it is clearly visible to the naked eye. It can be tricky to spot because it is always near the Sun. Because of this, it rises and sets with the Sun each day. Ancient civilizations believed they were actually two different objects, so they called the one which rose the Morning Star, and the one which sets the Evening Star. Of course, we now know it's the same object!

No one knows who really discovered Venus, since it is so obvious in the sky. However, much has been discovered about Venus in the past century. Robert Richardson noticed that Venus rotates "backwards". In other words, on Venus the Sun rises in the west and sets in the east.

Mercury has only been visited by one spacecraft, but Venus was much luckier. The United States and the Soviet Union were competing to send probes to Venus. Almost everything we know about the planet came as a result of this race. We now know that Venus has a very dense atmosphere that consists mostly of sulfuric acid and carbon dioxide. The surface of Venus is very hot, reaching temperatures of 900 ° F.

Even today we are still exploring our neighbor planet. In 1990, the Magellan spacecraft began mapping the surface of Venus. The spacecraft revealed volcanos, craters and the absence of water.

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Venus Inside and Out

Venus is the second planet from the Sun, and is Earth's closest neighbor in the solar system. Venus is the brightest object in the sky after the Sun and the Moon, and sometimes looks like a bright star...more

History of Venus Transits

Sometimes Venus passes between Earth and the Sun. This event is called a transit of Venus. Transits of Venus don't happen very often. There is a pattern in the time between transits of Venus. The pattern...more

Transits of Venus

Sometimes the planet Venus gets between Earth and the Sun. Astronomers call that a "transit" of Venus. A transit is a little bit like an eclipse of the Sun, when the Moon gets between Earth and the Sun....more

The Poles of Venus

Venus is the hottest planet in our Solar System. On Earth, places near the equator are much warmer than places near the poles. On Venus, it is really hot everywhere... even at the North and South Poles....more

The Polar Atmosphere of Venus

A vortex is a swirling, circular movement of air and clouds... like in a tornado or hurricane. The plural form of vortex is "vortices". The planet Venus has vortices in its atmosphere above each of its...more

The Cooling of Venus

The following may be the history of Venus. Venus formed about 4 Billion Years ago. at the conclusion of forming it continued to be bombarded with leftover material. Many planets still bear the remains...more

Venus Tick

This is an example of a volcanic tick. ...more

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Become a nitrogen atom in the nitrogen cycle in our Traveling Nitrogen Classroom Activity Kit/Game. See all our games, activity kits and classroom activities.

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