Astronomy, Astrophysics, Cosmology Forum

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Join in expert discussion on the topics of Astronomy, astrophysics and cosmology. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Stargazing *Question about Mercury, and viewing it from various view (binoculars to hubble)
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Graduate Accelerating universe - details and dispute
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Graduate Two separate barycenters of a binary system in a small closed universe?
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Graduate Simply connected vs. non-simply connected
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Graduate Dark Matter as a Yukawa Like 5th force?
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Graduate How Does Hawking Radiation Affect Black Hole Mass?
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Graduate Is the future of Cosmology limitless or are we bound by fundamental questions?
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Undergrad Efficiency of solar panels: Earth vs Space
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Graduate Some questions about glob. clusters and dark matter
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High School Is There a Planetoid Bigger Than Pluto?
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High School Why is everything in the Solar system on a flat plane?
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New goldilocks planet and if there is water on it?
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Graduate What is the Egg Shell Theory of the Universe and its implications?
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Graduate Could Dark Mass Be a Possible Explanation for Missing Particles in the Universe?
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Graduate Is there an infinite number of events in the past?
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Graduate Living between the Galaxies (Dark Energy)
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Graduate Why is the vacuum flat, i.e., Euclidean?
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Graduate What Lies Beyond Our Observable Universe?
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Undergrad I and Tim float a long string of closely spaced helium-filled
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Graduate Are We Correct? Calculating the Age of the Universe
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Graduate Distribution and proportion of dark matter in galaxies
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Stargazing Which is better, a refracting or a reflecting telescope?
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Graduate Hubble's Law And A Question Of Time
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Undergrad How do I calculate M_I from M_J values?
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Graduate What is the Shape of the Universe?
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Graduate Thought Experiement: The Earth's Fate with Added Mass
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Comet Hartley 2 Flyby: Incredible Images from NASA's Deep Impact Probe
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Undergrad Is the Lunar Laser Ranging Experiment a Good Topic for an Astrophysics Project?
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Undergrad Fine-tuned Universe for life = God
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Undergrad Eventual decay of all matter - question from an amateur
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Undergrad Could this explain how evaporation of matter occurs in the universe?
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Graduate Are the universe and time abstract concepts?
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Stargazing Looking for images of same object, but with different telescope sizes?
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Graduate Could Reformulating Gravity Solve the Dark Energy Mystery?
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Graduate What Is the Connection Between Black Hole Temperature and Event Horizons?
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Graduate Expanding Universe or Expanding Space?
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High School Uncovering the Truth: The Demotion of Pluto and the Search for New Dwarf Planets
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Undergrad Speed of Moon without Sun gravity.
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Graduate What Existed Before the Big Bang?
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Graduate Space Elevator Questions and What Ifs
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Undergrad Asteroid Hits Moon / Breaks it up:
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High School Is it possible that (re: earth and moon)
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Undergrad Newbie Asks: What Existed Before Big Bang?
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Graduate Questioning the cosmological principle
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High School Why Is Earth's Orbit Elliptical and Not Circular
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High School View Milky Way: How to Capture Photos from Earth
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Undergrad Book Research, Astronomical Justification for Plot Device
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Graduate Question about the universe structure?
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Stargazing *Quick* - Need to pick between 2 telescopes - Whats better?
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High School Question about monitoring radio waves/frequencies in space.
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Graduate What Is the Energy Associated with Dark Matter WIMP Particles?
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Graduate Entropy of Schwarzschild black holes
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Undergrad How can you tell that a planet in another star system is tidally locked?
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Graduate What is the velocity and direction of the CMB dipole?
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Graduate Manned missions or colonization of the gas giants.
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Graduate Is it mathematically feasible that the moon is hollow?
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Undergrad Conversion of units (tangential velocity)
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Graduate What is the nature of the gravitational field and its relationship to matter?
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Graduate Starring Gravity, Co-Starring Magnetism
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Undergrad Physics Topics for Astrophysics?
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Graduate CMB or nucleosynthesis as empirical tests of gravitation by radiation?
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Graduate If the universe is flat and finite?
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Undergrad How Does the Moon's Tidal Locking Affect Earth's Rotation?
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High School How Do You Determine Position and Speed in Space?
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Graduate How to Calculate Angles on a Sphere After Multiple Rotations?
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Is it possible for two planets to merge and still sustain life?
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Graduate How does this affect our ability to see the early universe?
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Does an Infinite Universe Include All Gods and Goddesses?
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High School Simple Astronomy questions - Need
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Graduate Could Cosmic Inflation Be Linked to the Expansion of Quantised Space?
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Graduate Can a universe exist without matter?
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Stargazing Best Telescope Under $400: Top Picks and Recommendations for US Shoppers
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Undergrad Understanding Orbital Mechanics: The Force Behind Planetary Motion
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Undergrad What Was the Resolving Power of Green Bank's 300-ft Telescope?
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Undergrad Taking picture of stars from weather balloon
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Graduate Is this Solar System Stable for Long-Term Evolution of Intelligent Life?
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Graduate Cosmic Radiation - how is our sun's speed calculated?
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High School Estimating Month Length - Tips from Owen
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High School Movement in Space: Understanding Acceleration & Force
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High School Layman's question about orbital planes
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Graduate Can black holes allow us to break the speed of light?
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High School Understanding Sun Storms: Causes, Intensities, and Time Periods
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Do Parallel Universes Really Exist?
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Undergrad Age of Universe: 14B Years - True or Assumption?
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Undergrad What is the chemical makeup of stars and how does it affect their lifespan?
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Undergrad Water in moon ejecta plume (Lcross report 22 Oct.)
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Graduate Another large scale structure of the universe idea
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Graduate Black hole gravational pull vs neutron star ?
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Undergrad Can I Pursue an Astrophysics Masters/PhD in the USA with a Mathematics Degree?
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Graduate Inflation Theory: Matter-Antimatter Annihilation Concept
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Graduate Period-Luminosity Relationship of Type I Cepheids - Need Better Formula
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Graduate Must a Hot Jupiter be relatively young?
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Graduate Is dark energy actually zero-point energy?
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Graduate Testing Relativity: Spinning in Space - Feasible?
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High School Does the earth translate around the sun?
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Graduate Why Do Disk Galaxies Appear to Spin Despite Irregular Redshift Patterns?
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Undergrad What Are the Competing Theories in Astrophysics: Dark Matter vs MOND?
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Graduate Galaxy at redshift z=8.6 (the actual paper)
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Graduate How Is the Distance to the CMB Measured and How Does It Relate to Its Structure?
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Graduate Does the universe need an escape velocity?
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