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.
High School Please answer a layman's questions about the Big Bang
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Graduate Was there a 'birth of gravity'?
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Graduate Would anything survive our sun's eventual nova?
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High School Are there any objects between Mercury and the Sun?
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Graduate Neutron stars and blue/red shifting
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High School Viewing Earth from the Moon - Would it Stay in One Spot?
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Stargazing Learning How to Use a Telescope on Your Own: Advice and Suggestions
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Graduate How Does Gravity Influence the Big Crunch Hypothesis?
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Undergrad Energy time relationship from an observer in space
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High School Has Jupiter Been Bombarded by Another Object?
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Stargazing How do space telescopes detect non-visible light?
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Graduate Red shift distance relationship and dark energy
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Graduate Is There an Upper Limit to Planetary Core Density?
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Graduate Proof of planetesimals for asteroid belt?
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Graduate What happens when an anitmatter blackhole collides with a matter blackhole?
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Graduate Calculating Distance to Cefeide Star w/ Stellar Extinction
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Undergrad Hawking Radiation: How Do Black Holes Emit?
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Graduate Question: How does gravity affect the speed of light in a black hole?
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Graduate Interpreting Negative Dark Energy Density in the Expanding Universe
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ISS Toolbag visible with the naked eye now
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Graduate Detect the cosmic neutrino background
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Graduate Observable Universe vs. HyperUniverse
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Graduate Source for the margin of error of curvature
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Undergrad Why Don't Heavier Elements Sink to the Sun's Core?
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Graduate Low entropy in extreme tempertures?
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Stargazing Gravity anomaly during solar eclipse.
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Graduate Unraveling the Mystery of Boltzmann Brains & Landscapes
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Undergrad The Expanding Universe: Understanding Hubble's Law
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Graduate Why Didn't the Universe Collapse Back to Singularity After the Big Bang?
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Graduate Equivalence of the 'expanding space' & 'kinematic' paradigms
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Graduate Will humans ever really understand why the universe exists?
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Graduate How likely is a super solar flare?
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Graduate Is the H.U.D.F. view in excess of 13 bly's. or not.
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Undergrad Difference between Thermal and Kinetic Energy
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Undergrad Faster than Light: Understanding the Expansion of the Universe
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Graduate Revisiting WMAP Data Reveals Significant Changes in CMB Power Spectrum
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Graduate Is Dark Matter Just a Reflection of Our Flawed Theories?
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Undergrad How to find the position of a star in the sky
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High School First broadcast TV satellite's orbit
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Undergrad Bigbang and its light coming to us
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Graduate Evidence for stellar evolution since the Big Bang
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NASA's Decision on Hubble's Fate: To Crash or Preserve?
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Graduate Could Our Universe Be Fractal?
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Graduate Can a Stellar Object Become a Black Hole through Relativistic Mass Increase?
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High School How Can Beginners Learn Physics and Cosmology Effectively?
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Undergrad Life & Death of a Star - Confused
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Stargazing Total Solar Eclipse 2009: July 22
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Graduate Do the Universe's Greatest Voids Challenge Hubble's Law?
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Graduate Why do people refuse the idea that something caused the big bang?
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Graduate Is the moon is moving away from us? or is the universe just expanding?
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High School Why Doesn't the Moon Revolve Around the Sun Instead of Earth?
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High School What Is Time and How Does It Influence the Universe?
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Graduate The gravitational binding energy of the Milky Way?
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Graduate Did Anti-Gravity Play a Role in the Universe's Early Expansion?
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High School What Really Happened to the Apollo Flag?
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Undergrad Satellite is in low orbit around the Earth
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High School What Color Would the Sky Be with Different Suns?
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Graduate How Does the Sun's Luminosity Evolve Before the Helium Flash?
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Graduate Can spacetime exist without energy?
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Graduate Space Elevator on Mars: Feasibility, Design Issues & Vibration
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Graduate Gravitation: curved spacetime or a force?
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Graduate Universe Expanding: Space or Matter?
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Graduate Can Dark Matter Travel Faster Than Light?
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Graduate Detecting gravity's effect on light
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Undergrad Can Centripetal Force create Gravity?
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High School Why haven't we launched any artificial satellites that orbit the Moon?
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Graduate Can a primitive galaxy nova or supernova?
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What Do Astronauts Research on the International Space Station?
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Graduate Where Do Neutrinos Travel in the Universe?
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Graduate What are the implications of a perfectly flat universe?
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High School What Can You See with a Small Telescope in Missouri?
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Graduate What Is the True Nature of Gravity and Why Does Mass Attract Mass?
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Graduate Why Is the Universe Comprehensible?
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Graduate How many baryons are there in the universe?
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Graduate Can Relativity explain Dark Matter?
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Graduate How unlikely is the formation of an earth size planet made of Uranium?
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High School Understanding Gravity: The Moon's Orbit in Our Solar System Explained
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Graduate Large Gas Cloud near Aquila Rift in Milky Way
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Undergrad Can we use paramagnetism to create a magnetic field on Mars?
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Undergrad Supernova explosions element detection.
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Graduate Earth Atmospheric Absorption Lines
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Graduate Galaxy Clusters & Superclusters: Definition or Ad-Hoc?
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Graduate What substance fills the universe?
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Is Mars Going to be Highly Visible to Earth in the Near Future?
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Graduate Can We Detect Uranium and Thorium Fusion in Stars Through Spectral Analysis?
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High School Direction of rotation in our Solar System
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Graduate Can the universe itself develop awareness or even omniscience?
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Graduate New Theory of Gravity: Is it Possible?
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Graduate GE - GMm/R: Does Vacuum Energy Affect Gravitational Fall?
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Graduate Misconceptions re: Cosmological Redshift
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Graduate Keplerian scattering through an array of mass lumps
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Graduate Are Dark Matter and Dark Energy Just Place Holder Labels for the Unknown?
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Undergrad How can the universe be big enough to fit all the stars when it's not that old?
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Graduate Human observer & cosmological interpretations
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Graduate Cosmic time and a cosmic location.
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Undergrad Can things exist/develope without gravity?
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High School Figuring the location of the sun
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Undergrad Interesting astro/phys question I'd like the naswer to
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Graduate How Can Newcomers Understand Hubble's Law and Cosmology Basics?
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Stargazing What is the best telescope for beginner astrophotography?
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