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Livable Planets?
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Light Echos reveal exploded stars
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Light cannot escape the universe (redux)
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Gliese 876 c
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How can we observe background radiation?
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Magnetic North
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Spitzer Unveils Infant Stars in the Christmas Tree Cluster
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The Great Meridiani Debate
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Sedimentary Geology at Meridiani Planum
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Cool Astronomy Software Section
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Water Bubble
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Further clays found by Spirit in the Columbia Hills?
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The "Comet Wild strain"?
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CalliArcale
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yet another post on black holes
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Ingredients for DNA and Protein Found Around Star
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Laser Used to Take Images of the Center of Milky Way Galaxy
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Happy solstice!
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rhodan
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Thusters for space elevator vehicles
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nexium
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How much light-gathering ability needed?
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Partial Ingredients for DNA and Protein Found Around Star
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Green Planet Redux.
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bonzelite
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Titan exploration
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colliding planets!?
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CalliArcale
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Scientist:neutron stars,not black holes, center of galaxies
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Cubic Planet Earth
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vogon13
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light experiement
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Geminids!
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Swampcat
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Dark matter just regular matter
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Strange new object found at edge of Solar System
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Pulsar Racing Through Space Reveals Comet-Like Trail
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time perception
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Updated Wikipedia Article on Gravitational Time Dilation
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Where did spin casting mirrors technology come from?
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Spiral arm of Milky Way looms closer than thought
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nexium
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Hubble 'weighs' Dog Star's companion
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Black Hole Surface
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kmarinas86
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How is the difference between a Red Dwarf & red shift found
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mlorrey
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Converting gravity into mass.
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kmarinas86
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Was Galileo wrong?
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CalliArcale
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What is beyond
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neutron_star69
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