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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Spotting 2005 YU55: Instructions & Speed Info
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Light Pollution & National Dark Sky Week
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Why Only One Sun & Moon on Earth?
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What Are the Potential Benefits of a Lunar Base?
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Is Velocity Consistent in Planetary Orbits?
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Is Dark Matter Just Unseen Water Vapor?
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Explore Manhattanhenge – the Manhattan Solstice
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Sun Angle: Differences by Season
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Will the red giant sun destroy the Earth?
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How Long Does VY Canis Majoris Have Left?
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Parallax and Perspective Explained
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Can a Planet Explode Like a Star?
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Kepler 16-b: first circumbinary planet?
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Why can't Jet planes fly in space?
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Is Tyche the Missing Planet in Our Solar System?
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Interstellar Sighting: Who Will See It First?
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Is 99% of the volume of the universe empty?
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Why do stars twinkle and what causes it?
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Was the early church right and Gallelio wrong?
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Space Expansion/Time Travel (#IMAN00B)
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How would you steer a spacecraft?
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Interested in looking at the night sky
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View Saturn Through a Telescope: A Noob's Guide
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Spectacular solar eruption 7 june 2011
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What happen to gravity in the center of earth
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Help a Physics Amateur - See Attachment!
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Lifetime of Earth: Planet vs Sun
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French claim first habitable planet found
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Do Galaxies Move? Rotation Around Something?
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Planets in Deep Space: Can They Escape Orbit?
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Help with trying to spot the ISS
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Odds of Finding Alien Life: An Exploration
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Explain Kepler's 3rd Law of Planetary Motion
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Why planets move ant-clockwise direction
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What can I do if I study astrophysics?
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Physics Projects for Teenagers - Charles's Quest
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Easter dating spreadsheet for Excel/OpenOffice
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The Universal Gravitational Constant G
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Is our sun part of a star cluster?
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How did moluculair oxygen devoleped on Mercury?
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Rainbows in Space: Can We See Light Refraction?
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Positioning of the artificial satellite
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Travel in Space: Electric or Fuel?
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Movement of spaceships versus spacewalkers
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Position of stellar bodies in space.
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