Intermediate Word:  ephemeris (a) the mayfly  (b celestial body sky location table  (c) anything with a very short duration  (d) type of early mechanical clock
Difficult Word: -motta - (a)
cetacean between dolphin and whale  (b) clump of trees on a prairie  (c) bland goat cheese  (d) Neapolitan half-jacket 

Magellanic Clouds, Dark Matter Warping Milkyway - SpaceDaily  Left:  A still from the video shows how the Magellanic Clouds (yellow bead) produce the warp observed in the hydrogen gas layer of the Milky Way Galaxy, which is in the middle. The position of the sun is about half way out in the picture of the galaxy along the line marked X. The cross-hatched area represents the warped hydrogen layer at the present time. The looping line is the orbit of the Magellanic Clouds and the position of the bead on the line represents the location of the clouds at the present time. The orbital period is about 1.5 billion years. (Credit: Martin Weinberg/Leo Blitz).  After nearly 50 years,astronomers have figured out what causes the mysterious and periodic warping of the structure of the Milky Way galaxy: The Large and Small Magellanic Clouds are interacting with the galaxy's dark matter halo to magnify their gravitational influence, creating the warps as they orbit their parent in a cycle that takes about 1.5 billion years. Though dark matter remains undiscovered via conventional observation, its effect on the gravitational dynamics of galaxies now is widely accepted. the key.   
Rewriting Glacial History In Pacific N America - SpaceDaily   Although the story on glacier fluctuations in northwestern North America over the last 10,000 years has remained largely unchanged for decades, new evidence discovered by a University of Alberta researcher will rewrite that glacial history and offer clues about our climate history during the last several thousand years. Alberto Reyes, a PhD student in the Department of Earth and Atmospheric Sciences, and his research team have found evidence for a regionally-extensive glacier expansion in the first millennium AD, suggesting that climate during the last several thousand years may have been even more variable than previously thought.    

Outside View: India's Huge Challenges - SpaceDaily  The big question for India's economy remains: "How long will the party last?" This was the headline of an in-depth economic survey published in "India Today," on Nov. 28, 2005). The analysis was based upon the conclusions and recommendations of the "Board of India Today Economists" -- experts from various institutes and organizations. On the flip side of the coin, we see the darker elements: Shortage of skilled workforce, rising salaries, rising inflation rates, poor governance in the Federal State of India and in many provinces and slow administration combined with corruption as well as poor infrastructure and unequal education.     

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