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.
Undergrad Difference between hot and warm pixels?
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Undergrad Learn Astrophysics: Self-Study Tutorials & References
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Undergrad Why do black bodies emit light at all wavelengths when heated?
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Graduate What's the most distant observed star which is not a supernova or quasar?
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Undergrad Question regarding movement of universe
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Undergrad Question: What is our solar systems galactic position?
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Graduate Expansion of space or accelerating speed?
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High School Relationship between color of stars and their heat intensitiy
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Undergrad Confirming Solar Wind & X-Ray Flux Effects on Earth's Magnetic Field
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Graduate Gravitational waves and quantum physics
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Graduate Is Antimatter Present in Cosmic Rays?
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Undergrad Two Black Holes: Reactions and Behavior
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Graduate Smolin's two predictions, circa 2006, True ?
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Undergrad Will Converting Mass to Energy Affect the Universe's Temperature?
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Graduate How did scientists use WMAP to determine the flatness of the universe?
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Stargazing Could a very large telescope see a star as a disk?
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High School All the bodies in our solar system alligns in one line?
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Undergrad The Possibility of "Pure" Planets
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Graduate The Interplanetary Magnetic Field
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Undergrad Should the Drake Equation Consider Moons?
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Graduate Will it ever be possible to create Matter from a large source of energy ?
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Graduate Nagging question about inflation of universe
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High School The historical quest for the farthest astrononomical object. Can anyone help me?
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Graduate A question about the universe from a non-physicist?
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Graduate Could the Early Universe Have Collapsed into Black Holes?
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Graduate Origin of the Universe - Byteland.org
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Graduate Is the temperature of the universe affected by inflation?
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Undergrad Help calculating planets attributes
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Graduate Michio Kaku, Parallel Universes, and Galactic EZ Bake Ovens
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Undergrad What Caused the Change in Earth's Orbit 125,000 Years Ago?
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Graduate Energy conservation in an expanding Universe
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Undergrad Did Mars belonged in Earth's Orbit at one time?
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Graduate Big Bang Big Schmang, astronomical redshift is an artifact of distance
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Graduate The Fermi Paradox: Are We Alone in the Universe?
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High School What are some theories of the creation of the universe?
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Graduate Calculating strength gravity over light years
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Undergrad Why are there Magnetic Fields on the Sun?
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Undergrad What is the force of gravity between Andromeda and the Milky Way?
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Graduate Asymptote of expected rotation curve velocities
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Graduate Reversing a Black Hole: Can It Be Done?
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High School Graphs of galaxy rotation curves?
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Graduate Big Bang supposedly set matter and energy
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Graduate Extended structure of dark matter
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Graduate Matter/Anti-Matter: Explaining Space Travel Applications
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Graduate Evidence of Rotating Black Holes?
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High School Is Astrobiology a Legitimate Scientific Field?
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Graduate Black Holes & Stars: Can Stars Rotate BHs Stably?
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Graduate Energy, blackholes and whiteholes
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Graduate Electron degeneracy pressure in QM
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Graduate Is Directed Panspermia the Key to Spreading Life Across the Universe?
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Undergrad How Does the Sun's Motion Appear from Earth's Perspective?
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Graduate The First Particles After the Big Bang: What Do We Know?
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Undergrad Wavelengths increasing with space?
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Undergrad Tracking the Sun's Galactic Orbit: Uncovering the Origins of Our Solar System
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Graduate Hydrostatic Equilibrium in General Relativity
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Graduate Question on redshift/expanding universe
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Graduate Determining Distances to Galaxies
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Did I Fail the Job Interview?
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Graduate Can the Big Crunch Theory Allow for Time Reversal?
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Graduate Limiting value of Hubble constant
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High School How To measure Moon Orbital Velocity ?
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Graduate 7-year WMAP data: cosmo implications
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Graduate When did H2O develop during the last 13.5 b y?
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Undergrad What is the relation between gravity and light?
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Graduate Space-time fabric distortion measuring
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Undergrad Coordinate systems in the solar system?
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Graduate Unraveling the Mysteries of Vacuum Genesis
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Graduate Gravitons and gravity in a asteroid-planet interaction
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High School Sun Expansion: What Would Humans Do?
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Undergrad Force of Gravity in terms of Density
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Undergrad What Happens When You Go Through a Wormhole?
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Graduate Accelerating Universe, Relativistic Mass and Dark Energy
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Graduate The Universe's Possible Cyclic Existence
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Graduate Is Gravity Truly an Entropic Force in the Universe?
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Eternal Universe - What Do You Think?
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High School Observing Objects at 45N 90W: Simple Astronomy Question
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Graduate Omega Point Theory: Plausible or Pseudoscience?
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Graduate Mass Below Jeans Mass: Implications for Systems
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Undergrad Formulas for Elliptical Orbits X,Y,Z Co-Ordinates
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Graduate Observing Bright Stars: Project Checkup
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Undergrad Where does the missing energy go in redshift?
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Graduate Detection of gravitational waves
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High School How Can Beginners Learn About Black Holes and Space?
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Graduate Hi, i have a question about Gravitons
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Graduate The Universe Exists Because It Has To
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Undergrad Does Hydrogen Alone Lead to Life in the Universe?
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Undergrad How Do Black Holes Influence the Path of Light?
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Undergrad Could Titan Support Life Like Earth in the Future?
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Undergrad Electromagnetic frequency question
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Remnants of asteriods caught in image?
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Undergrad Betelgeuse Supernova: Did It Happen?
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Stargazing Building Telescope Signting Laser
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Graduate What Are the Current Controversies in Quintessence Theory?
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High School Does Saturn Have a Hexagon on it?
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Stargazing Amateur telescope eyepiece filters
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Spirit in the Air and Space museum
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Graduate Dark Energy in Light of the Cosmic Horizon
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Undergrad Uncovering the Mysteries of Black Holes
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High School Perceiving the expansion of the universe in daily life
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Graduate Is It Possible to Create a Universe in a Laboratory?
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