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candle in a balloon
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DrRocket
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expansion of universe
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SpeedFreek
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FLORIDA NIGHT SKY
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Tamirov
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"Light crystals"
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nailpounder
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center of galaxy
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origin
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IS THERE AN EARTH-II
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dragon04
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The Quiet Sun
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Hawking rushed to Hospital
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Urgently Help me to finding some Physics Books
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Space arms
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CAN ANY ONE HELP
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ZenGalacticore
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Why does the very large resemble the very small?
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kalrin2001
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meteorites how easy to find on earth.
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crazyeddie
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Relationship between apparent magnitude & app. brightness?
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Saiph
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Space Flash...Space Roar?
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Mee_n_Mac
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Northern Lights from 42,000 feet / 12,000 metres.
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xXTheOneRavenXx
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Space recycling
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Anyone willing to survey an exam for me?
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aphh
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Shannon Sampling theorem
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Where would worm holes be located?
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eburacum45
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Collision Theory and Stable Orbits
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Black Holes What will happen?
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Why is it we always see towards the center of the Milky Way?
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Boris_Badenov
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Big Bang!
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DrRocket
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Gamma waves and visible light?
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drwayne
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Gravity in small scale
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DrRocket
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Quasars, Why not?
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omnitom
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How rocket engines work? Newton's Third Law of Motion:
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DrRocket
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Evaporating Universe
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derekmcd
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Please help...
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christein057
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Space Rocket Re-Usable as Space Base Building Blocks
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thnkrx
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universal time clock?
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DrRocket
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Light & BB?
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SpeedFreek
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Conflict with special relativity
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Saiph
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Doppler Red Shift
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Dark matter and existence of hidden dimensions
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What interests you about space?
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ArcCentral
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How did it all start??
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ArcCentral
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Some news on Polywell fusion
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origin
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Andromeda
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MeteorWayne
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