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 Telescope Size and Distance: Do We Need Four Times the Diameter?
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Graduate Would the night sky still be dark with 2mm-sensitive eyes?
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Graduate Cepheid Stars & the Hubble Parameter: What is Their Role?
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Graduate Is the Friedmann equation derived ONLY from the Einstein Field Equations?
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Graduate Can Two Infinitely Sized Objects Exist in an Infinite Space?
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High School Can black holes and alien invasions explain the Tunguska event?
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Undergrad Do black holes interact with dark matter/energy?
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Undergrad Developments in Space Exploration
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High School Discovering the Sun's New Twin: HD 101364
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Undergrad Can the Speed of a Gamma Ray Burst Exceed the Speed of Light?
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Undergrad Is Earth's Orbit Shifting?
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Graduate Expanding and Accelerating Space in Layman's Terms
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Graduate Limitation to mass of currently forming stars?
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Does nuclear weapon can destory the moon?
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Graduate Absence of Jupiter: Accretion Effects & Impacts on Earth
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Graduate Do new bits cause the expansion and acceleration of the Universe?
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Graduate Numerical Fourieri Analysis of a GRB light curve
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Undergrad Limb Darkening Coefficients Calculation: Understanding Bandpass Selection
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Undergrad Moon Destruction: What Would Happen to Earth?
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High School Are new planets and stars still forming?
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Undergrad What accounts for the expansion of the Universe accelerating?
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Graduate What would the largest anti-matter object be?
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  • Poll Poll
Undergrad Space Vehicle Patent: Is Electromagnetic Propulsion Possible?
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Undergrad Size Universe: Radius 13.7B Years Old?
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High School Gravity in Space: Why is Zero Gravity?
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Undergrad Has Anyone Used a FITS Library for Extracting Galaxy Coordinates in C++?
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Graduate Is the Friedmann expansion the ultimate 'free lunch'?
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Graduate Disproving Kepler's Law: Evidence from Earth's Orbit
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Undergrad What are some other theories about dark matter and dark energy?
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High School Measure of elevation of Antares at 30minute intervals
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Are Voyager 1 and 2 Still Sending Data Back to Earth?
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Graduate Sun's Normalcy: Is Less Nuclear Burning Possible?
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Graduate Nonrelativistic perihelion drift, best references ?
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Stargazing Telescopes: what can you see without CCD?
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  • Poll Poll
High School Is There Life on Mars and How Does Water Play a Role?
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Graduate Questions about Light: C+ Universe Expansion, Radiant Energy Transfer
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Graduate Uncovering the Mystery of Millisecond Pulsars: Surviving Against All Odds
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Undergrad What is the capacitance of the sun?
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Undergrad Dark Matter & Dark Energy: Unfound Cosmological Science
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Graduate Formation of Neutrons in Collapsed Stars
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Debunking Video: Uncovering the Truth
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Graduate Why our time dimension is about to become space-like
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Graduate Is it helpful in formulating theories to assume the opposite of what we see?
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Graduate Electricity and Birkeland currents in space
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Graduate Can Energy Density in Deep Space Vacuums Be Measured?
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2001: A Space Oddyssy (Contains Spoilers)
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Undergrad How did the heavier elements form?
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Is the Universe Missing a Chunk of Matter?
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Undergrad Angle viewed form erath between sun and planet.
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Undergrad What is Meinel System and OH Meinel Emission Bands?
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Graduate Can Light Escape the Boundaries of the Universe?
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Undergrad Mean Orbital Separation Question
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High School Is a Larger Dimension Required for the Universe's Expansion?
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Graduate Interpretation of dark energy and gravity as the same thing
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Undergrad The First Sputnik: How Was Geocentric Orbit Achieved?
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Undergrad Moon's orbit & length of day/month
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Undergrad Airship Rotating Earth: Can it be Done?
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Undergrad Search for Astrophysics Objects in Comprehensive Database
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Stargazing Check the profile of a telescope mirror
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Undergrad What is the evidence and history behind the Big Bang Theory?
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High School Distance from Sun to outside galaxy?
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Undergrad Do Supernovae Emit Gamma Rays in All Directions?
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Makes it harder to believe we're alone
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Graduate Calculating Dark Matter's Acoustic Peak Resonance: A Homework Assignment
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Graduate What Theories Are Impacted by the New Discovery About the Magellanic Clouds?
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Undergrad Orbits: explicit r(t) and theta(t)
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Graduate Believing in an Infinite Universe: Reasons Explored
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Graduate What Are the Minimum and Maximum Limits for Gas Giants and Terrestrial Worlds?
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Graduate CRIRES (VLT) Radial Velocity Sensitivity
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Graduate Is There an Exact Equation for Transit Time Calculation in Extrasolar Planets?
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Undergrad Law of conservation of Energy please explain how it is
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Graduate Can Dark Energy Be Tested in a Lab Using Superconductors?
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Stargazing Build a Powerful Telescope at Home | Tips and Tricks for Optimal Magnification
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Graduate Parallel universes make quantum sense?
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Undergrad Questions About the Flat Universe: Answers Inside
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Graduate Explaining Universe's Fate with Thermodynamics
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Graduate Lunar Space Elevator: Is a Rocketless Trip Possible?
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Graduate Harnessing Comets for Planetary Colonization
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Stargazing What beginner telescope should I buy for under $150?
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Undergrad The Earthly Risk of Rogue Black Holes
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Graduate Is the Big Bang Actually a White Hole?
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High School How Do You Prevent Telescope Lenses from Fogging Up in Humid Climates?
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NASA Resurrects Mission to Visit Asteroids in 2007
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Undergrad What is the Role of Plasma in Solar Flares?
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Graduate Uniqueness of Bojowald's Bounce in the Multiverse
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Undergrad What is the significance of inverse meters in astronomy calculations?
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Graduate Explaining the Quantum Mystery: Are Parallel Universes the Answer?
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High School Traveling at c, how long to the edge of the solar system from earth?
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Undergrad How Have Advances in Cosmology Progressed Since Einstein?
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Graduate Supernova Distance Debate: New Evidence from Astrophysics Research by H. Arp"
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Graduate Our skewed perception of galaxies
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High School Discover the Maximum Wavelength of M101 Visible to the Naked Eye
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Undergrad Habiting Planets: Is It Possible?
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Graduate What Could Have Happened Before the Big Bang Theory?
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Graduate Einstein-deSitter Expansion Questions v.2
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Undergrad Supernova in Our Galaxy: Impact on Earth and Frequency of Occurrence
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Undergrad White Dwarf GD 362 - signs of earthlike planets
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Graduate Is a toroidal black hole possible?
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Experience the Magic of Across The Universe - A Must-See Film!
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Graduate Parallel Universes: The Mind-Boggling Reality Confirmed by Oxford Scientists
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