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Dino Species: Early Meat-Eaters Crossed Continents
Dec. 10, 2009 New Dinosaur Species Tawa hallae from New Mexico Had Evolutionary Roots in South America Did the first dinosaurs wander across continents or stay put where they first evolved? The first dinosaurs evolved 230 million years ago when the continents were assembled into one landmass called Pangea. The question of early dinosaur movements remained unclear until the discovery of some exciting new fossils. |
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Ore Deposits Linked to Ancient Atmosphere
Nov. 20, 2009 Much of our planet’s mineral wealth was deposited billions of years ago when Earth’s chemical cycles were different from today’s. Using geochemical clues from rocks nearly 3 billion years old, a group of scientists including Andrey Bekker and Douglas Rumble from the Carnegie Institution have made the surprising discovery that the creation of economically important nickel ore deposits was linked to sulfur in the ancient oxygen-poor atmosphere. |
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Forming the present-day spiral galaxies NEW Feb. 04, 2010 Using data from the NASA/ESA Hubble Space Telescope, astronomers have, for the first time, created a demographic census of galaxy types and shapes from a time before the Earth and the Sun existed, to the present day. The results show that, contrary to contemporary thought, more than half of the present-day spiral galaxies had so-called peculiar shapes only 6 billion years ago, which, if confirmed, highlights the importance of collisions and mergers in the recent past of many galaxies. It also provides clues for the unique status of our own galaxy, the Milky Way. |
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Absorbing
Hydrogen Fluoride Gas to Enhance Crystal Growth
Dec. 10, 2009 Two scientists at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory have developed a method to control the buildup of hydrogen fluoride gas during the growth of precision crystals needed for applications such as superconductors, optical devices, and microelectronics. The invention — by Vyacheslav Solovyov and Harold Wiesmann and recently awarded U.S. Patent number 7,622,426 — could lead to more efficient production and improved performance of these materials. |
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Northrop
Grumman and U.S. Air Force's Next-Generation of Global Hawk
Unmanned Aircraft Takes Flight
Dec. 09, 2009 "AF-18, the eleventh of the next-generation Global Hawk Block 20/30/40s to arrive at Edwards Air Force Base, performed beautifully," said George Guerra, Northrop Grumman vice president of HALE systems. "This flight marks the continuation of our Global Hawk flight test program, and is a testament to the team comprised of people from Northrop Grumman and the Air Force who have worked so hard to make this happen." |
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Call for Decade of Vaccines NEW Feb. 01, 2010 Bill and Melinda Gates announced that their foundation will commit $10 billion over the next 10 years to help research, develop and deliver vaccines for the world's poorest countries. The Gateses said that increased investment in vaccines by governments and the private sector could help developing countries dramatically reduce child mortality by the end of the decade, and they called for others to help fill critical financing gaps in both research funding and childhood immunization programs. |
| Top Article in World News Report |
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Gates Pushes for More Iran Sanctions NEW Feb. 08, 2010 US Defense Secretary Robert Gates pushes for more sanctions on Iran. Deborah Lutterbeck reports. |
| Latest from The Environmental Awareness Report® |
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Breakthrough
in Monitoring Tropical Deforestation Announced in Copenhagen
Dec. 10, 2009 Tropical forest destruction accounts for some 20% of global greenhouse gas emissions. But quantifying these emissions has not been easy, particularly for tropical nations. New technology, developed by a team of scientists at Carnegie’s Department of Global Ecology, is revolutionizing forest monitoring by marrying free satellite imagery and powerful analytical methods in an easy-to-use, desktop software package called CLASlite. Thus far, 70 government, non-government, and academic organizations in five countries have adopted the technology, with more on the horizon. |
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The Cassini Mission
Satellite
Companionship
NEW
Feb.
08, 2010 Saturn shares its space with its moon Tethys in this Cassini-captured scene. Tethys (1,062 kilometers, or 660 miles across) can be seen above the rings near the middle of the image. This view looks toward the northern, sunlit side of the rings from just above the ringplane. |
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Mars Missions Gallery Frost-Covered Dunes in the North Polar Region NEW Feb. 05, 2010 This image shows dunes on the northern plains of Mars, and appears similar to images taken when the surface was covered by frost. However, CRISM spectra taken at the same time do not show evidence for either water or carbon dioxide frost here. Possibly, and consistent with the CRISM spectra, this area is covered by dust, obscuring the dark material that is typically present in dunes of this type. | |
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Solar, Earth Atmospheric and Climate Gallery 2009 Global Temperature: Year Tied as Second Hottest NEW Jan. 31, 2010 The new 2009 global temperature data. Scientists at the Goddard Institute for Space Science found that 2009 was tied as the second hottest year ever recorded. | |
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Solar, Earth Atmospheric and Climate Gallery Interview Segments with Key Glory Personnel NEW Jan. 31, 2009 Glory is a remote-sensing Earth-orbiting observatory designed to achieve two separate mission objectives. One is to collect data on the chemical, microphysical, and optical properties of aerosols, along with their spatial and temporal distributions. Glory’s second mission objective is to continue collection of total solar irradiance data for the long-term climate record. | |
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Science Gallery What is a Planet NEW Jan. 25, 2010 From its beginnings denoting the "wandering stars" of the classical world, the definition of "planet" has been fraught with ambiguity. In its long life, the word has meant many different things, often simultaneously. Over the millennia, use of the term was never strict and its meaning has twisted and blurred to include or exclude a variety of different objects, from the Sun and the Moon to satellites and asteroids. |
| Latest in Stellar Nights® Gallery |
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Stellar Nights®
Gallery
Pluto
Animation May 21 2009 Two frame animation showing Pluto's movement in relation to background stars over a period of 25 Hours, 17 Minutes. Taken by Paul Rix at the PCW Memorial Observatory. |
| Latest in Space Weather News Center |
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SOHO Pick of the Week Sliding Plasma and a CME NEW Feb. 08-15, 2010 The STEREO (Behind) spacecraft could see streams of plasma sliding along magnetic field lines above a sputtering active region (Jan. 26-29, 2010). The dynamic streams were just over the Sun's edge and readily spotted as the Sun rotated them more into view. Then it gets more interesting. |
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Celestial Events Mars and the Moon NEW Feb. 26, 2010 MAP | MAP Mars and the Moon are side by side at nightfall in the East. Look for Pollux above Mars. Pollux is the brightest start of the constellation Gemini. |
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| StarDate NEW Feb. 01-08, 2010 StarDate is the public education and outreach arm of the University of Texas McDonald Observatory. Our English and Spanish radio programs air daily on more than 500 stations. And their popular bimonthly astronomy magazine is the perfect skywatching companion for amateur astronomers or anyone interested in celestial events and space exploration. We also offer astronomy resources to teachers, the media, and the public. |
| The Hypercube |
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Why Do We Assume NEW Jan. 02 2010 That all mass and energy is quantized. Many observations of the quantum world suggest the existence of a continuous non-quantized form of mass and energy. For example in 1924 Louis de Broglie theorized that all particle posse wave properties. Science does not question the validity of this concept because it is the foundation of a theory known by the name of wave mechanics, a theory which has utterly transformed our knowledge of physical phenomena on the atomic scale. |
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