It probably formed in the Kuiper belt, which lies about 30 to 50 times further from the sun than the Earth, while the others come from the Oort Cloud, some 5,000 times further away. Hartogh, whose research was published online in Nature, believes Hartley 2, whose current orbit around the sun does not extend much beyond Jupiter, started life in a different part of the solar system than other comets studied. Now, in principle, all the water could have come from comets." "It means it is not true any more that a maximum of 10 percent of water could have come from comets. "It was a big surprise when we saw the ratio was almost the same as what we find in the Earth's oceans," Hartogh told Reuters. D/H measures the proportion of deuterium - or heavy hydrogen, which has an extra neutron - compared to ordinary hydrogen in water. In the case of Hartley 2, researchers using infrared instruments on the Hershel Space Observatory found that ice on the comet has a near identical "D/H" ratio to seawater. Previous models of the early Earth implied most water came from asteroids. The finding substantially increases the amount of water that could have originated from comets, which are made up of rock and ice with a characteristic tail of gas and dust. Past analysis of water-ice from far-flung comets suggested they could have delivered no more than 10 percent of today's oceans because the chemical "fingerprints" did not match up.īut research from Paul Hartogh of Germany's Max Planck Institute for Solar System Research and colleagues published on Wednesday showed a comet called 103P/Hartley 2 has the same chemical composition as the Earth's oceans. seam closure Earth toned, heavy woven fabric with a floral kaleidoscope-like. The puzzle is where the water, which is vital for life on Earth, came from. Download and use 60+ Kaleidoscope stock photos for free. 22 Earth Toned Floral Kaleidoscope Decorative Throw Pillow - image 1 of 1. The comet Hartley is seen in this undated NASA handout image. The intense heat of the planet immediately after it formed means any initial water would have quickly evaporated and scientists believe the oceans emerged around 8 million years later. The types of materials that can be used to make kaleidoscopes are almost as endless as the images its mirrors produce. LONDON - Astronomers have found the first comet with ocean-like water in a major boost to the theory that the celestial bodies were a significant source of water for a thirsty early Earth. Click on the image to read the story of each of the 44 designs. The visual and infrared mapping spectrometer team homepage is at. StoneCircles are celebrations of nourishment, support, and beauty bestowed by Mother Earth. The Visual and Infrared Mapping Spectrometer team is based at the University of Arizona where this image was produced.įor more information about the Cassini-Huygens mission. The Cassini orbiter was designed, developed and assembled at JPL. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. These images were taken on June 21, 2004, with Cassini's visual and infrared mapping spectrometer at a distance of 6.35 million kilometers (3.94 million miles) from Saturn. Download and buy this stock image: Abstract blue earth button fading in tunnel, kaleidoscope background - ESY-033792693 from agefotostocks photo library of. Assigning each of the three images to blue, green and red, respectively, results in the beautiful, false-color, composite image shown below. The third image on the right in the panel was taken at a wavelength of 5 microns where, because they are composed of almost pure water ice, the rings absorb almost all the light, and Saturn, because its interior is warm, glows. The center image in the top panel was taken at 2.4 microns, where the rings strongly reflect light, but Saturn, because of the methane in its atmosphere, absorbs most of the light. The image at the upper left was taken at 1.3 microns, where both Saturn and its rings strongly reflect light. This false-color image of Saturn was constructed by combining three images at three different infrared wavelengths. A lovely wooden Kaleidoscope that allows you to view the world through an insects eye with.
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