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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.
Comet Hyakutake on 3/22/96.
Click on image for full size
Night of the Comet/NASA

Comet Hyakutake

Comet Hyakutake was found on January 30, 1996 by a man in Japan named Yuji Hyakutake. He spotted it using strong binoculars. This comet was visible from late March until late April, 1996. On March 25, the comet reached its closest approach to Earth of 9.3 million miles away.

Comet Hyakutake has probably not approached Earth for thousands of years. Astronomers observing comet Hyakutake found large quantities of the molecules ethane (C2H6) and methane (CH4), so far not found in other comets. Astronomers for the first time also observed X-rays being emitted from a comet.

Finding these usual molecules in a comet suggests that comet Hyakutake may be a new type of comet.

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Cool It! Game

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

DISCOVERED! X-rays from comet Hyakutake

A bit of background Space scientists have found x-rays when looking at comets. These x-rays are just like the x-rays your doctor uses when looking for a broken bone. They are also like the x-rays your...more

DISCOVERED! X-rays from comet Hyakutake

A bit of background Space scientists have found x-rays when looking at comets. These x-rays are just like the x-rays your doctor uses when looking for a broken bone. They are also like the x-rays your...more

Comet Hale-Bopp

Comet Hale-Bopp was one of the brightest comets of all time. Astronomers witnessed the comet spew out intermittent bursts of dust. The surface seemed to be an incredibly dynamic place, with 'vents' being...more

Missions to Halley's comet in 1986

Six spacecraft flew to Halley's comet in 1986. There were two spacecraft launched from Japan, named Suisei and Sakigake, and two from the Soviet Union, named Vega 1 & 2. One spacecraft, ICE, was from the...more

The Jupiter family of comets

Astronomers have noticed a group of comets which they call the Jupiter Family of Comets. This family of comets is to be found circling between Jupiter and the sun, as shown in this picture. The comets...more

What we learned from Comet Shoemaker-Levy 9

Scientists have learned a great deal from the crash of comet Shoemaker-Levy 9. Scientists traced the orbit of the comet backwards in time to guess its origin. The crash of a comet like Shoemaker-Levy 9...more

The trajectory of Comet Shoemaker-Levy 9 over time

Mathematical theory suggests that comet Shoemaker-Levy 9 was likely a short-period comet which was captured into orbit around Jupiter in 1929. This orbit ended with a collision of the comet with Jupiter...more

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We now offer the Cool It! card game in our Science Store. Cool It! is the new card game from UCS that teaches kids about the choices we have when it comes to climate change.

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