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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Why does Sirius A blink in many colors?
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Everything is in motion, what is not?
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Can Planets Thrive in Binary Star Systems?
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Could Jet Engines Be Used for Space Travel?
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On the post-main-sequence evolution
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Is the universe expanding faster than expected
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Types of Supernovae: Explanations & Differences
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What would happen if the Moon wasn't there?
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How does Ram pressure kill galaxies
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Speed of light within a black hole
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Is the Universe Inside a Black Hole?
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Relating Gravitational Field Strength and Mass
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Keeping Time on Mars: A New Calendar System?
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Hot Jupiters & Kepler's Laws: Does it Violate?
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New star in the skies -- Plausible?
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Problems With a Terraformed Moon -- Maybe?
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Significance of a planet's "surface gravity"
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Move vehicle in space by rail structure systema
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Confused about traveling at the speed of light
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Is the Earth in its original orbit?
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Black Holes & Time: How Do We Observe Movement?
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Does dark matter make black holes bigger?
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Are OH molecules in masers ionized?
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Are asteroids found by the light they reflect?
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Determining the transition frequency
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Can Orbiting Bodies Slow Down Over Time?
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Black Holes & Time: A Closer Look
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Discussing Juno/JunoCam Mission and Jupiter Data
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Living on Titan: A New World for Humans?
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Action and reaction of a rocket in space.
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Is the effect of gravity limited by distance?
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Are all galaxies moving away from the Milky Way?
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Are black holes white or monochromatic?
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Height measurement on other planets
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Luminosity and neutrino questions
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Retrograde star orbits in the Milky Way
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Quantisation of light and Doppler effect
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Weird quantum property of empty space?
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The Semi-Major Axis of Binary Stars
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Neutron Stars and Angular Momentum
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Trying to study the major constellations
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So I don't understand moon eclipses
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How do we study space-time singularities?
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Mars' Global Sandstorm: Causes and Effects
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Huge amounts of water ice found on Mars
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Flatlanders in the 3rd dimension "Hyperspace"
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Rosetta's comet mission discussion thread
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Methods of accelerating in space?
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How could we "reactivate" Mars' magnetic field?
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Prediction: A Red Nova May Rival Polaris in 2022
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Terraforming Venus: Why Nobody Discusses It?
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Do Stars Experience Precession Like Our Sun?
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Need confirmation of planetary distances
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Line absorption spectrum and stars
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Uranus May Have Two Dark Unseen Moons
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