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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.
New Horizons took this picture of a volcanic eruption on Jupiter's moon Io. The plume from the volcano can be seen near the top of the image. The volcano is named Tvashtar.
Click on image for full size
Image courtesy of NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute.

Results from the New Horizons Jupiter Flyby

The New Horizons spacecraft is on its way to Pluto. Along the way, it flew past the giant planet Jupiter. When the spacecraft flew by Jupiter, Jupiter's strong gravity gave New Horizons a "slingshot boost" in speed. The extra speed will make New Horizon's trip to Pluto take less time. Still, the spacecraft won't reach Pluto until 2015!

New Horizons blasted off in January 2006. It flew by Jupiter on February 28, 2007. It was going about 21 km/sec (47,000 mph) when it zoomed past Jupiter! But Pluto is very far away. Even at these high speeds, it will take New Horizons about nine years to go from Earth to Pluto.

Scientists took some good pictures of Jupiter when New Horizons flew past the planet. The spacecraft has very good cameras and other instruments.

The New Horizons team also got to practice a planetary flyby. When a spacecraft flies past a planet, it needs to make a lot of complicated moves. It needs to point its cameras the right way. It needs to turn instruments on and off at the right times. And it needs to radio the data it collects back to Earth. The New Horizons team got to practice all of this at Jupiter. Now they will be ready when New Horizons finally makes it to Pluto!

New Horizons took lots of great pictures of clouds in Jupiter's atmosphere. It took pictures of the "Little Red Spot". The Little Red Spot is a storm on Jupiter. The Little Red Spot is the "smaller cousin" of Jupiter's famous Great Red Spot.

New Horizons also got some nice pictures of Jupiter's rings. It also studied Jupiter's magnetic field..

New Horizons also took pictures of a few of Jupiter's many moons. It took pictures of the icy surfaces of Europa and Ganymede. It also got some of the best shots ever of volcanic eruptions on Io.

Last modified March 21, 2007 by Randy Russell.

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