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.
Graduate Is Matter Still Being Created from Energy?
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Graduate Relativistic Effects on our Observations of the Universe
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Graduate Is there preferred reference frame for motion in the universe.
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Undergrad Black holes (didnt know where to put this question)
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Undergrad What the hell is a Johnson V Magnitude?
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Undergrad Question: what is the resistance forming spiral galaxies?
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Closest Mars Approach to Earth in 5,000 Years: Real or Hoax?
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Undergrad Time Frame of Sun on Ecliptic Plane vs Equitorial
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Graduate What is the best sky projection to use for my purposes?
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Graduate Could Anti-Matter Be Moving Backwards Through Time?
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Undergrad Is the Big Bang Still Happening and How Does it Influence the Universe?
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Graduate Big Bang Cosmology: Running Hot and Cold
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Graduate Philosophical/quantum implications of Big-Bang singularity
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Graduate Pre Big Bang Cosmology: Is There a Consensus?
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Graduate Can You Survive a Jump into a Black Hole?
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Graduate Understanding Comoving Hubble Radius
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Stargazing Velocity of shadow of solar eclipse
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Undergrad Ask an Astronomer: Mars and the Moon on August 27
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Undergrad Is cosmic back ground radiation able to somehow not dissapate?
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High School Distance and Time: A Big Question
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Graduate The Big Rip: Will Black Holes Be Ripped Apart Too?
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Undergrad The center of the infinite universe
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Graduate How to determine the total energy in the universe
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Graduate Can Supernovae Measurements Constrain the Curvature of the Universe?
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High School Are There Really Green Stars in Our Universe?
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Stargazing Star gazing with light pollution
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Graduate What Was the Total Mass Energy Density at Recombination?
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Graduate Parsing Time in the Very Early Universe
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Undergrad What is wrong with our understanding of the universe?
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Undergrad Where to Find Journal Papers on Dark Matter?
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Undergrad Alien Contact & the Drake Equation: Agree or Disagree?
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Graduate How Do Particles Transition Between Cells in Physics?
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  • Poll Poll
[Poll] Which scientific breakthrough will come first?
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And i saw a big red glowing ball.
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Graduate Is the Fate of the Universe Truly Determined by Dark Energy?
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Graduate Naive Multiverse Question: What Happens When Universes Collide?
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Graduate Do black holes swallow dark matter?
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Graduate Gravity along a shifted sun-earth line?
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Undergrad Basic Question about Star Formation
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Graduate Is the Galactic Coriolis Effect Debunked or Proven?
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Undergrad Photometric data from SDSS fits files
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Graduate Could 'Dark Matter' be Nutrinoes?
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Graduate I hope this helps answer your question!
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Graduate Non-baryonic Dark Matter: Is There Electromagnetic-Only Matter?
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Graduate Is the standard model of cosmology flawed?
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Undergrad How Long is the Moon's Heliocentric Path and Its Mean Speed?
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Undergrad Wayward Stars: Has Ejection Ever Been Observed?
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Undergrad Big bang contradicts flat universe?
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Undergrad What Are the Lunar Frequencies and Radiations Impacting Earth?
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Graduate What would happen if gather all universe matter into one object.
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Graduate Can Conformal Weyl Gravity be a Viable Cosmology?
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Graduate Can TV Antennas Pick Up CMB Radiation?
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Undergrad Balmer Discontinuity: Place & Wavelengths
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Graduate HST ultra deep field and angular diameter
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Undergrad Is Our Universe Infinite or Spherical?
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High School What Direction Are Galaxies Flowing in the Expanding Universe?
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Graduate Does Cyclical Universe Theory Account for Matter Distribution Anomalies?
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Graduate Interesting thought about black holes
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Graduate Dark Matter Missing Mass Really too Much Gravity
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Undergrad Why Did Mars Die? - Unveiling Its Geological Mystery
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Graduate Is There an Infinite Number of Galaxies in an Infinite Universe?
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High School Angular Momentum: Keeping Planets on their Orbit
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Graduate What is the fabric of space made of
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Graduate Are modern galaxies found in ancient galaxy clusters?
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Graduate Could Quantum Mechanics Explain the Mysteries of Dark Matter?
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High School Big Bang: Space & Time Explained
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Graduate Some slight confusion regarding the dimensionless Hubble parameter h.
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Stargazing Mars' orbital telescope and ice rock
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Undergrad Has the Gravitational Constant Been Measured on the Moon?
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High School What causes the strange gravity effects on the Moon?
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Graduate Can a Sundial Measure Ecliptic Longitude Accurately?
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Graduate Has an infinitely bouncing universe really been discredited?
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High School Gravitation on Planets: Effects on Life
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Is the Japanese Miniature Universe Experiment Still Ongoing?
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Graduate Is the world of anti-matter a possibility or just a fictional concept?
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Graduate Useful Background Reading on Black Holes
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Undergrad What is the impact of the Sun's magnetic field flip on Earth and its satellites?
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Undergrad Universe contained in another universe
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Graduate Earth's axis of spin w.r.t. galactic rotation axis
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Undergrad Can someone explain Pulsars and Quasars?
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Graduate Eddy currents due t into the core of the Earth
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High School Why Do Some Months Have 30 or 31 Days While February Has 28?
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Great Graffiti Stop Motion Big Bang Big Boom
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Graduate What is Dark Matter Made Of?
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Graduate Can we analytically continue the Standard Model?
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Graduate What is the process for deriving a galaxy's (i.e. Milky Way) wavelength?
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Graduate Conformal time analytical expression
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Graduate How to Create Space-Time World Line Diagrams?
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Undergrad CCoronal Mass Ejection Aug 2, 2010: Implications for Earthbound Folks?
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Undergrad Could a Solar Flare destroy life on our planet?
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Undergrad Velocities of earth's atmosphere, exosphere etc
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Graduate Inflation is very unlikely less than 10^-6.6×10^7
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High School Where is the zodiac located in the universe?
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Graduate Is it possible to determine if space is fixed or moving?
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Graduate Slight confusion with black holes
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Graduate Here is some weird idea: Dark matter/energy explained by negative mass matter
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Graduate Big Bang: Unravelling the Temperature Mystery
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Graduate Does the Opaqueness of Space Increase?
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Stargazing Can We Map Matter Beyond the Visible Universe Using the EPR Sky?
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Graduate Density of Atmospheric Gas Using Newtonian Gravity
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