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 Can Light Be Influenced by Gravity?
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What causes tidal gravitational forces?
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Ecliptic, Celestial equator and horizon?
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Physics In Space Assignment - Year 12
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Did Mercury and Gemini use the same capsule?
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Balloon within a balloon question
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Comparing Matter & Antimatter Suns
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Why does the Moon rotate around the Earth?
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GyratorIIVLFReceiver and 75 cm VLF loop antenne
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Why Does Camera Flash Brighten Stars in the Sky?
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Do even torch lights twinkle in the sky?
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Why hasnt been artificial satellites torn apart?
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Can someone calc these escape velocities?
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Is the Earth's net charge really zero?
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Where Is Dark Matter in Our Universe?
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Do all stars belong to galaxies?
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Sun disappearing thought experiment
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Oort cloud bodies and prevalence
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Does the Earth get bigger from the sun?
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Some very basic Astronomy questions
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What is a Morton Wave on the Sun?
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What is 1 AU? Definition & Explanation
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How Do Meteor Showers Occur?
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Why Does the Moon Glow? Causes of Illumination
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General info on our solor system
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Hubble Discovers New Supernova in Cygnus
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Is There a Planetoid Bigger Than Pluto?
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Is it possible that (re: earth and moon)
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Why Is Earth's Orbit Elliptical and Not Circular
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View Milky Way: How to Capture Photos from Earth
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Simple Astronomy questions - Need
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Estimating Month Length - Tips from Owen
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Layman's question about orbital planes
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Does the earth translate around the sun?
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Could Gliese 581 Be Our Next Habitable Planet?
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Is Earth’s orbit far from circular?
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Question about Phases of the Moon. Thanks
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Is the Waning Crescent Visible Near the Horizon?
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What would happen if you fell into a black hole?
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Super black holes and stars orbiting them
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Tele Vue / Meade laser test: question
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How can I view a star catalog in a txt file?
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Question why does the moon move around the earth
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Mysterious Flash in the Sky - Ask PF Community
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String of satellites transits moon?
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Moon Question (Vacuum, air, escape vel.)
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Comet Passing by Earth: Effects & Destruction
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The origin of water in the universe
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Can you see Venus shining near the noon hour?
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Calculating speeds of radio to a planet
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Why do stars appear to be white in color?
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What is the maximum mass a planet can reach?
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Why Doesn't Air Get Sucked into Space?
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Kepler-9 b,c planets discovered
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