Join in expert discussion on the topics of Astronomy and astrophysics. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
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How many stars we can see from Earth?
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Is Voyager 40k years from a star?
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Anyone see the brief flash in Orion last night?
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Why there are summer and winter seasons?
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So I want to bend space lots of times
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Difference between Cosmology and Astronomy
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What is Dark Matter and Dark Energy?
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Newly Discovered Trans-Neptunian Dwarf Planet
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What are the various types of cosmic explosions?
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What Do We Need to Survive on Mars?
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Something escapes the corona of a black hole
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Cell phones used to detect cosmic rays worldwide
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Where Do Wormholes Take Us in Space and Time?
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Is this a photograph of water on Mars?
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What are the ways we can search for alien life?
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Move Mass in Space: How Much Pull?
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Venus Info: Is It Hot & How to Cool It Down?
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Sun & Horizon: Why Does it Look Different?
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Find 1.25" Focuser for 8" Newtonian Telescope
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Who discovered the cause of a red moon?
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Unraveling the Mystery of the Comet Dust Layer
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Why does Pluto revolve clockwise
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Could we throw stuff into space?
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A little solar activity this week
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How to convert Ohms to luminosity?
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Galaxies Colliding: A Rare Phenomenon in Space
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Solar day and the amount of Earth's rotation
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Lunar and Solar eclipse - same times a year?
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Viscosity of Space: Theory & Evidence
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The sun at midnight from North Pole
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What is the center of the universe?
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How Fast Is the Moon Moving Away from Earth?
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How far can transmissions go in space?
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Help in Understanding Black Holes
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Why do planets and stars flicker?
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Large, Persistent Eclipse/Shadow On Earth?
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Why does the moon orbit the sun?
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After supernova explosion sound is created....
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What absorbs Ultraviolet radiation?
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The Mystery of Gravity: Doubts Answered
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Is This Picture Really About the CNO Cycle?
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Question on Comet 67P tail in Rosetta image
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Orbiting Eternally: Physics Q&A with Steven
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How much energy radiates from Jupiter?
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Are there any "Polar" solar system structures?
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Conservation of momentum of collision
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Is Oxygen-Based Life Possible in Other Galaxies?
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From what dark matter in space consist of?
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Constant acceleration of gravity
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Planetary Alignment: Mercury Out of Sync
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Do we all belong to the same star?
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Fake magnification and other information
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Are Jupiter's bands visible with binoculars?
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How is the radius of the Earth determined?
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Can We Fly Faster Than a Train?
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What really happened during the Tunguska Event?
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Big Bang Theory Explained: Is It Disproved?
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What happen when we reach black hole?
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