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 Dark matter really due to stars having some charge?
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Graduate Why didnt hubble discover that universe is accelerating?
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High School Explain Kepler's 3rd Law of Planetary Motion
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Graduate Orbit of planet have to be a conic section
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Undergrad Could a bullet shot from a spaceship orbiting Earth escape the planet?
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Graduate Is it possible that the sum total of everything is nothing?
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Undergrad Why Do Physicists Consider Black Holes Something?
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Are the Wonders of the Universe waiting to be discovered?
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Graduate A Black Hole's Event Horizon: No Particles Have Crossed...Yet
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High School Why planets move ant-clockwise direction
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Graduate Can a 1kg Black Hole Be Manipulated and Moved?
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High School Is the Universe a Giant Russian Doll?
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Graduate Was There Time Before the Big Bang?
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Graduate What is the Energy of the Big Bang?
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Graduate Are Parallel Universes the Key to Understanding the Multiverse Theory?
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Undergrad Does Time have a mathematical equation or Law?
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Undergrad Space Junk Removal: Is Laser Technology the Answer?
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Graduate Has this idea been explored? Why the universe expands
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Graduate Matter-antimatter imbalance - how do we know?
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High School Are Stars Limited to Galaxies or Can They Exist in Intergalactic Space?
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Graduate Would an object appear frozen while crossing into the threshold
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High School What can I do if I study astrophysics?
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Stargazing What's a good, affordable telescope for someone who's never owned one
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Undergrad How Does the Angle of Impact Affect the Depth of Meteorite Craters?
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Undergrad Cosmological Inflationary Models
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Graduate How is it possible the universe is infinite?
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Graduate Can anyone please suggest me a project topic?
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Graduate Objects as L3 and L4 at once - possible?
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Is life on other planets limited by the elements present?
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What Are the Dangers of Space Travel?
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Its crazy to think its all actually out there
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Darkness-Free Day: A Sign of Jesus's Birth?
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High School Physics Projects for Teenagers - Charles's Quest
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Graduate What Is the Physical Reality of Space?
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Graduate What is the Definition of the Wave Zone in Potential Calculations?
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High School Easter dating spreadsheet for Excel/OpenOffice
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Undergrad The Doppler Effect: Near and Far Galaxies
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Graduate Has Bekenstein's MOND Paper on Dark Matter Alternatives Been Fully Understood?
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Graduate Required mass for hydrogen burning in stars
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Rotating Universe: Instant Axis Rotation Proven!
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Graduate Calabi-Yau Writing Fiction Question
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New Learner Seeking Audio Lectures & Books to Expand Knowledge
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Stargazing Telescope Limitations: What to Know
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Graduate What Does the Expansion and Inflation of the Universe Mean for Quantum Physics?
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Graduate What Happens If an Object Exceeds the Speed of Light?
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High School Distance to the Moon: NASA's Measurements and Findings
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Graduate Does Our Solar System's Orbit Through the Galaxy Cause Magnetic Pole Reversals?
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High School What are Supernovae and Hypernovae? Any resources or insights?
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Graduate April is the time to see where the solar system is going (at 370 km/second)
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Undergrad Calculating Mass-Kepler's 3rd Law
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Graduate Cosmology With Sunyaev-zeldovich Effect
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Graduate Age versus size of the universe
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Graduate Black Hole Mass Accretion Temperature
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Undergrad Black Holes and Gravity: Answers to Your Questions
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Stargazing Zhumell Z8 Dobsonian. 8 inch reflector
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Graduate Calculating Luminosity Distance in an Empty Cosmology
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Graduate Anthropic Principle: Opposition & Logic Explored
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Graduate Astronomy in UV and X-ray Spectrum
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Undergrad Transition A produces light with a wavelength of 400 nm
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Graduate Is our universe finite or infinite?
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Graduate Falsification of eternal inflation
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Graduate How Can I Calculate the Distance of an Object in an Elliptical Orbit Over Time?
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Undergrad Using a straw in a space capsule
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Undergrad Understand Phase-Space Density: Basics & Concepts
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Graduate I got a question about dark energy
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Graduate Are we accelerating in the universe?
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Undergrad Astrophysics Reading Suggestions for College Students
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Graduate Argument that all computable universes are real
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Graduate How Do High Redshift Galaxies Differ from Low Redshift Galaxies?
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Graduate Future of the Universe: What Happens After 10^(trillion) Years?
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Graduate Understanding Vacuum Energy Density in Relation to Universe Expansion
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Graduate Dark Matter Halo: Modeling Rotational Effect on Galaxy V(r)
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Graduate Does Light Mass Increase a Black Hole?
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Graduate Is physics mathematically deducible?
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Graduate Antimatter Universe: Same or Different?
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Graduate How can the universe be infinite?
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Undergrad Gravity and the Formation of Stars
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Graduate Max Entropy: Is Infinite Chaos Possible?
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Graduate What are the chances of the Big Bang producing us?
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Graduate What is the difference between inflation and expansion?
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Undergrad Teslescopes see the past, but which?
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Graduate Black holes and only photons going in
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Graduate The entropy of the universe? (attempts to define gravitational entropy)
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Graduate Susskind on the cosmological constant.
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Graduate How do branching ratios affect neutrino fluxes at Earth?
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Graduate What is the impact of life on Earth and its environment?
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Graduate Psr b1913+16: Impact of Periastron Epoch Change on Orbital Period Rate
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Graduate Cosmology's standard model: is science becoming a belief ?
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Graduate If wormholes connect two areas in spacetime, wouldn't that require 5
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Graduate Friedmann Equation demonstration - Liddle
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Graduate Inflaton Field, Cosmological Constants and Spacetime
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Graduate Mechanism for Gammaray Bursts (computer sim shows neutron star merger works)
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Graduate Can You See a Parallel Universe Through a Black Hole?
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Undergrad Pyramids = were they pointing at supernova?
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High School Uncovering the Truth About Planet X: Debunking Myths from a Renowned Astronomer
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Undergrad Which Textbooks Cover Cosmology and Measuring Cosmic Distances?
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Graduate Could anti-mass explain the missing anti-matter from the big bang?
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Undergrad Uncovering the Mystery: The Science Behind White Light and the Sun's Spectrum
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Undergrad Uncovering the Truth: Our Position in the Universe & Cosmic Background Radiation
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Undergrad After Supernova: What Happens Next?
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