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 this reaction possible in the star?
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Graduate Is the Universe's Structure Truly Compact or Just Matter-Induced?
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Graduate The Role of EM Radiation in Cosmology Today
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Graduate Does Gravity Travel at the Speed of Light?
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Graduate Could dark matter be explained as a quantum gravity effect?
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Graduate How can I access the Hipparchus HR Diagram data for my project?
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Graduate Three times as many stars? (new estimate by van Dokkum and Conroy)
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Graduate Building Blocks of Life: Paradox of Drake Equation Fl Term
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Undergrad Help Needed: Surviving Year-Long Placement with Mid-Semester Report
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Undergrad Universe contains many more red dwarfs than previously thought
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Graduate New figure for speed of solar system relative to the ancient light
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High School Can Cosmic Rays Penetrate Stones, Mountains, and the Human Body? Answers here!
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Undergrad Easy A Courses for Science Majors: Astronomy vs. Intro to Psychology
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Graduate Wow Anyone seen these pictures? Could they explain dark matter?
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Undergrad How Far Away Are the Farthest Quasars in the Universe?
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Graduate How did matter go so far so fast?
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Graduate The fate of the Universe - big rip, then big crunch?
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Graduate Is Fusion possible at the accretion disk of a Black Hole?
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Undergrad Just need someone to clear something up for me
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Undergrad Where Can I Find Resources on Orbital Mechanics for Game Development?
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Undergrad Need help converting values regarding Jupiter's mass, and moons.
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High School How Do Meteor Showers Occur?
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Undergrad What Formulas are Used to Put an Object into Orbit?
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Graduate Quantum/Relativitiy and the Speed of Light Paradox
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Graduate Miniscule changes in the physical constants?
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High School Why Does the Moon Glow? Causes of Illumination
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Undergrad Are Black Holes Infinite and Do They Emit Jets?
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Graduate How Can Maxima Help Solve 2+1 BTZ Black Hole Metric Calculations?
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Undergrad If the universe came from a single atom, then
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Graduate Could intelligent life cheat God?
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High School Studying for Intro Astronomy Exam: Galileo & Star Spectral Class
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Graduate Why does the universe have to have a beginning?
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Graduate Calculation of CMB anisotropies size
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Stargazing Binoculars or Telescope: Which is the Better Choice for Amateur Astronomy?
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Graduate Unraveling the Universe: The Relationship Between Matter and Mathematics
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High School Is there a 3D map of the naked-eye visible nightsky objects?
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Graduate What Is the Typical Magnetic Field in High Mass Stars?
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Undergrad How dense could Earth's atmosphere potentially be?
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Undergrad Cometologist Brian Marsden Obit
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Graduate Is the Universe Infinite? Theories and Considerations
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Graduate Spectroscopic Analysis of the IR-Visible Galactic Core
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Graduate How Does Matter Influence the Universe's Expansion and Dark Energy?
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Graduate Why the Sun Doesn't Move: Debunking Common Misconceptions About Solar Motion
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High School General info on our solor system
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High School Hubble Discovers New Supernova in Cygnus
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Undergrad Is the Universe Becoming More Orderly or Disorderly?
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Undergrad What Forces Shape Bar-Centered Galaxies?
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Graduate The Universe: Finite or Infinite?
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Graduate Can Black Holes Dance Around Each Other Without Merging?
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Graduate Optimizing Gravitational Redshift Measurements: Techniques and Targets
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Graduate Extinction events and an astrolabe
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High School Our solar system's proximity to other ones
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Graduate Unravelling the Mystery of "Faint Regime" in Cosmological Explosions
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Graduate How is the Galactic Magnetic Field Measured and Modeled?
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Graduate String stars instead of black holes?
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Graduate Does the entire universe have a survival instinct?
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Undergrad Kepler's Second Law: Equal Area in Equal Time
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Graduate Unraveling the Mystery of Quasars: Are They Really Dying Out?
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Graduate Could White Holes Exist Beyond Black Holes in Higher Dimensions?
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Graduate Stellar Collisions: Modeling Neutron Star & White Dwarf Interactions?
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Graduate Is the birth of the Universe a random event?
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Graduate What Is the Universe Expanding Into and How Fast Is It Growing?
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Undergrad Weather Ballon with Camera/GPS payload. 1x600g or 2x600g balloon for lift?
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Graduate Is Our Perception of the Universe Just a Black Box?
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Graduate Can we make a standard Universe clock?
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High School What was the level of astronomy like in say 1888?
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Graduate Binary w/ black hole - semi-major axis?
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Undergrad Origin of Cosmic Rays: Intensity Explained
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Rare, not so well known facts about Andromeda. ?
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Graduate Could We Detect and Avoid a Black Hole Approaching Our Solar System?
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Graduate How does GR slow a homogeneous universe?
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Other Solar Systems: What Are They?
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Graduate Does the universe have zero total energy?
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Graduate Is this equation I made correct?
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Undergrad Detecting a small object in space.
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View Milky Way in Oregon: Tips for Naked Eye Viewers
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Graduate Is gravity really a force of universal attraction?
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Graduate An interesting notion about inflation.
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Allan Sandage, Astronomer, Dies at 84; Charted Cosmos’s Age and Expansion
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Stargazing What features of Andromeda Galaxy can you make out with an Amateur Telescope?
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Graduate CMB fluctuations related to dark matter and normal matter?
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Graduate Einstein + Hawking = Dark Matter ?
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Alien life forms, do they exist?
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Undergrad Photons in Empty Space: Is Space Full?
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Undergrad A burning question from a random thinker
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Graduate A question on Gravity Waves and Gravity Radiation
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Undergrad New Dark Matter Map Solving Galactic Puzzle?
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Graduate Universe only appears to be expanding.
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Undergrad How a binary system affects gravity on members?
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Undergrad Equation of an Elliptical Orbit for a Moon around a Planet
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Undergrad Uncovering the Mystery of Potential Mars-Sized KBOs
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Graduate Understanding Photon Decay in Vacuum: Rate, Influence, and Causes
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Consciousness and Reality: A Symbiotic Relationship
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Undergrad Could a Moon Make Gliese 581 g Habitable?
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Graduate The outcome of bending a blackhole to itself
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Graduate Relativistic mass and Hubble constant
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Graduate Help with gravitational potential energy of stars
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Graduate Calculating Luminosity of a Star at Different Stages
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Graduate The Ultra-mega-macrostructure of the Universe
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Graduate Where Can I Find Raw Data for Galactic Curve Velocities?
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