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Einstein Was Right, Astrophysicists Say




Researchers have confirmed a long-held prediction of Albert Einstein's theory of general relativity, via observations of a binary-pulsar star system. Eclipses in a unique system of two dead stars, called pulsars, has shown that one of the pair is 'wobbling' in space - just like a spinning top. The effect, called precession, is precisely as predicted by Albert Einstein and is thus a new and exciting confirmation of his theory.


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Development Of Laser Spectrometer Opens The Way For More Effective Carbon Trading, Drug Development And Carbon Dating
Carbon offsets increasingly are becoming a major component in the arsenal for reducing global warming. Even Bon Jovi, the Rolling Stones and the Dave Matthews Band are doing it: acquiring carbon offsets to reduce the carbon footprint of their tours. As more organizations and businesses start trading in carbon offsets, the need for accurate measurements of carbon emissions also is becoming critically important for fair and exact exchanges.
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where to get helium
me and my friend are making a very large blimp and were wondering what we should do for gas

going to a store to get it filled up is out of the question simply because it will be much too large. not only that we still need to do things like balance it and test its flight out and everything. we're using garbage bags as the membrane and trying to keep it as simple as possible to avoid small leaks but they cant be stopped without adding a lot of tape.

so i was wondering a few things

helium or hydrogen

hydrogen would be a lot cheaper and would end up having a lot more lift which we need all the lift we can get because we live at 6500 ft
but its also explosive, and hard to find. i have no idea where i would find hydrogen and whether or not most companies would even sell to an individual.

helium is very stable but has the worse part of the items mentioned before cost and lift.
although it is way easier to get helium apparently you can go to almost any party store and just pick a tank up for like $20

would another gas be suitable?

any help would be greatly appreciated
in fact if you do contribute significant help we would be willing to put a "sponsored by" on the side of the blimp
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Scientists discover a molecular scaffold that guides connections between brain cells
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New Silverleaf Whitefly Resistant To Many Pesticides
A devastating tropical and subtropical pest that's already considered one of the world's top invasive species just got a bit more troublesome. The silverleaf whitefly (Bemisia tabaci) threatens a wide range of crops. Of the more than 20 known biotypes of this species, two of the most devastating are the B and Q biotypes. The Q biotype, newly arrived in the U.S., is less susceptible to many pesticide types.
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Corey Powell, Executive Editor, Discover magazine, 7-19-07
Discover magazine, robotics, cancer research, science education. Corey Powell oversees the Discover magazine's overall design and content, with a special emphasis on narrative features and investigative stories. Mr. Powell is an adjunct professor of science writing in NYU's Science and Environmental Reporting Program.
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ScienceDaily: Matter & Energy News
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