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 the Universe's Geometry Truly Irrational?
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Like a diamond in the sky(with video)
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Undergrad Motion of randomly generated stars
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Graduate Can Two Stars in a Static Universe Ever Collide Due to Gravitational Influence?
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Undergrad Is Pi a Rational Number in Discrete Space?
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Graduate Practical cosmology and cosmology physics
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Undergrad How Many Gamma-Ray Bursts Occur in Each Galaxy?
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Graduate Gravitational acceleration for a rotating torus
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Graduate Ideas about dark matter and structure
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Undergrad Is the Pioneer Anomaly really directed towards the Sun ?
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Graduate More clues about structure formation (e.g. minimum galaxy mass)
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Undergrad Kepler's Laws, mysterious equation?
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Graduate Could CMB Mass Reveal Insights About Dark Matter?
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Graduate Filaments of Galaxies: Connecting Clusters in Space
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Graduate How Does Dark Energy Affect the Universe's Expansion?
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Graduate Alternative hypoteses for cosmological redshift
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Graduate Measuring astronomical distances
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Graduate What Models Explain the Expansion of the Big Bang?
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Graduate What is centimeter continuum emission?
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Undergrad Can arXiv.org's Papers be Simplified for Beginner Physics Students?
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Undergrad What type of camera is needed for solar corona photography?
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Graduate Does the Black Hole Event Horizon violate the Equivalence Principle?
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Undergrad Is it known what dark matter is?
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Graduate What is the outer source of anomalous cosmic rays?
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Graduate What is the Difference Between Curved Space and Curved Spacetime?
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Graduate Would like to know what energy is beyond its definition
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Graduate White Hole Postulation: Can it Exist?
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High School We in the Center: Why Are We at the Universe's Center?
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What Does a Cosmologist Do?
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Graduate Black Holes and Galaxy formation
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Graduate Can human being ever find the real basic laws of our universe?
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Undergrad Find the spectra of most elements on line?
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Graduate Friedman equations from flat FRW universe line element
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Graduate Can black holes really destroy information forever?
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Undergrad Basic Question about angle of inclination of a circle
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Stargazing Light Source for Point source fibers - telescope
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Graduate Liveweaver's Paper On Expanding Confusion Is Confusing
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Graduate Dark Matter Exists: Evidence from Colliding Clusters
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Undergrad Is the Big Bang Theory the Only Valid Explanation for the Universe's Origin?
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Undergrad Dark matter within the solar system
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Graduate Converting Cosmic Super-Voids from Mpc/h to LY - What is the Conversion Factor?
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High School Black Holes & Wormholes - What Happens?
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Graduate Signal to the end of the universe
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High School Tides are influenced by the moon
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Graduate Did the Big Bang Really End or Are We Still in It?
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Graduate Debunking Dark Energy: Where Does Energy Go in the Universe?
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Graduate What Causes a Star to Collapse into a Black Hole?
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Graduate XMM observes evidence of dark energy
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Undergrad Is the Universe Expanding or Are Galaxies Moving Apart?
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Undergrad Life in Universe, statistical point of view
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Undergrad Which Weakens More Over Distance: Gravity or Light?
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Graduate Number of galaxies by type, today
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Graduate Can the cosmological constant term run in Einstein's equations?
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Graduate A way to see dark matter annihilation (Pamela: cosmic positrons/antiprotons)
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Graduate Galaxie recession vs. universe expansion?
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Graduate Is the Universe Expanding from a Single Point and Can We Observe Its Center?
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Graduate Principles behind galaxy formation
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Graduate Can sound waves reveal the history of dark energy in galaxies?
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Graduate Gunn-Peterson effect and the Lyman-alpha forest
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Graduate What is the newest theory on the missing mass?
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Graduate Origin of universe/big bang question
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Undergrad What Do Hard and Soft Spectrums Really Mean?
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Undergrad Basic question about sun's mass & orbit of planets
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Undergrad Possible rotation of a tidal locked object?
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Could Invisible Matter Exist in Different Dimensions?
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Graduate Why is matter not uniformly distributed across space time?
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Graduate Rotations of Earth and other Rigid Bodies
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Graduate Expansion drains momentum from massive objects
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Undergrad Moon's & Sun's Diameters During Solar Eclipse
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Graduate Why is space expanding and matter including galaxies not shrinking?
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Graduate Hubble+/- 4.3%, is the constant constant ?
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Graduate What Happens If You Travel Beyond the Edge of the Universe?
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Graduate Is The Definition Of A Singularity Incorrect?
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Undergrad Gravitation Force on the Earth's Centre
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Graduate What is the speed of gravity and its relationship to light?
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Graduate Temperature of the CMB, from WMAP
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Graduate Why Does the Speed of Light Have a Limit?
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Graduate Is the energy and mass of the universe constant?
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Graduate Why Don't Cosmologists Consider Other OUs?
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Graduate String fusion during the begining of our universe?
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Graduate How Does the Cosmological Constant Λ Define the Cosmic Scale of Space-Time?
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High School Why cant u go to outer space like an upwards climbing roller coaster?
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High School Is Matter Composed of Space and Energy?
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Undergrad Was the Early Universe Hot?
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Graduate Orbit in space (extrasolar planets)
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Graduate Hubble ultra deep field - beyond the big bang
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Favorite books to read on subjects ranging from Astronomy
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High School How does the movement of stars compare to the movement of planets
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Graduate What Do 600 Hubble Survey Results Reveal About Cosmic Expansion?
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Graduate Pliers, pulsars and extreme physics
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Undergrad Why Don't Galaxy Rotations Follow Kepler's Third Law?
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Undergrad What Makes Our Solar System Special?
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Graduate Is the Universe's Expansion Constant or Accelerating?
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Graduate Are the Cosmological Coincidences Just a Matter of Chance?
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Will the universe run out of energy?
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Graduate Swiss Cheese" Cosmology: Luminosity Dist. & Single Void Size
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Graduate Spin angular momentum of black hole
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Undergrad What is the relationship between the speed of light and the meter?
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Graduate Superluminal Recession & Cosmological Redshift
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Graduate What Defines Safe Orbital Distances for Planetary Bodies?
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