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 How Do Critical Density and CMB Irregularities Explain the Universe's Shape?
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CERN scientists eye parallel universe breakthrough
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Stargazing Increasing the resolving power of a telescope
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High School Could Gliese 581 Be Our Next Habitable Planet?
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Undergrad How is measuring Redshift possible?
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High School Ideas for High School Astrophysics Course Syllabus
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Undergrad New to astrophysics, don't have a good physics foundation, need some help
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Graduate What are the limits of interstellar travel?
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Undergrad *Quick moon question - (about orbit)
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Undergrad Formation of Stars: How Gas Spins to Fuel Birth
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Undergrad Is this angular size calculation correct?
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Undergrad Universe Origin: How Could Galaxy be 13B Light Years Away?
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Graduate How Does Gravity Work and What Causes Time to Slow Down Near a Black Hole?
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Graduate Superstring Cosmology: Compactifying 7 Dimensions
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Undergrad How do I normalize the likelihood distribution?
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Undergrad Is the Big Bang Theory Debunked?
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Stargazing Pictures I took at a 2.5m telescope in the Canary Islands
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Undergrad Are Wormholes the Key to Unlocking the Universe's Secrets?
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Graduate Could Dark Energy be Caused by a Slow Shift in the Base State?
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Undergrad Calculating the Earth-Sun distance during perihelion
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Graduate Inflation and initial conditions
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Graduate The Collision of Elliptical Galaxies: A Surprising and Promising Event
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Stargazing What is the Best Catadioptric Telescope for Portability and Versatility?
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Undergrad Greenwich Mean Timt, GMT and Universal Coodinated Time, UT
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Question about having a Theory in astronomy. ?
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Undergrad Question about Objects in Ultra Deep Field
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Stargazing Heyy, i've had a telescope before and know how to use them.Has
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High School Is Earth’s orbit far from circular?
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Stargazing What Are the Best Telescope Models Within the £100-£250 Range?
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Graduate Faster than Light Travel Side Effects
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Undergrad Black holes giving birth to stars?
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Graduate How Do Stars Achieve Their Massive Sizes?
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Graduate What are the Current Main Research Topics in Astrophysics?
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High School Question about Phases of the Moon. Thanks
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High School Is the Waning Crescent Visible Near the Horizon?
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High School What would happen if you fell into a black hole?
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Undergrad Tides & Moon Distance: Seeking Answers
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Stargazing Aug 21st, 2017, a total solar eclipse will cross the US
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Graduate Dark matter and keplerian revolution
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High School The Grand Design - Stephen Hawking and Leonard Mlodinow
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Graduate What Causes Hypervelocity Stars to Eject from Black Holes?
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Graduate Calculating Motion in a Three-Body Gravity System: Challenges and Solutions
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Undergrad Calculating Gravities for Math to the Moon
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Undergrad From physics how can we figure out how old the earth and the universe is?
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Graduate Can a "Dead Universe" be Revived?
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Undergrad Astrometry and Elliptical orbits
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Graduate How is the Final Velocity of Star Movements Calculated?
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Undergrad Can We Reach the Moon with a Slow, Steady Launch?
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Undergrad How Can We Determine the Size of a Black Hole?
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Undergrad Could Heat Exchange Be the Reason Behind Earth's Spin?
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Undergrad Strange wikipedia entry about the sun's core
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Graduate The infinite possobilities presented by the infinite amount of probabilities
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High School Why are solar eclipses so short compared to lunar eclipses?
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Graduate Negative pressure and dark energy
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Graduate Why smaller particles come together
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Graduate Colliding Black Holes: Will the Smaller Get Pulled In?
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Undergrad Define/explain this gravity calculation (picture)
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John Huchra Dies at 61; Maps Altered Ideas on Universe
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Graduate Can FLRW metric be taken to describe stretching in time rather than space?
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Graduate Quasar Alignment to Cosmic Strings
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Graduate Expanding Present Time Universe at Omega 0 = 1: Help Needed
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Graduate Can a QM/GR overlap provide a breakthrough in understanding gravity?
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Undergrad Galaxies on the Edge: Understanding the Expansion of the Universe
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Graduate What caused the expansion of the universe for the 1st 7 billion years?
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Graduate What is the relationship between mathematical structures and real existence?
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Graduate Is the Expansion of the Universe Driven by Mass?
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Graduate What is the energy of the galactic magnetic field? (E/c^2)
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Graduate Plotting Intensity in Airy Pattern of Telescope - 1D
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Graduate Cosmological Constant: Dark Energy vs Gravity Ratio
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Graduate Are Distant Globular Clusters the Key to Testing Newtonian Gravity?
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Graduate If Big Crunch = True, then Reincarnation = True?
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Graduate Subatomic particle and space curvature
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Graduate Origin of Dark Energy: Before the Big Bang
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Graduate How many methods for dating a galaxy
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Graduate Was the Universe Really Chaotic Right After the Big Bang?
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High School Super black holes and stars orbiting them
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Graduate Super-black holes and the universe
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Graduate Explore the Possibility of Other Universes with Hawking's "The Grand Design
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Undergrad Was the Moon Ever Touching Earth Billions of Years Ago?
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Graduate State of matter before a black hole is formed.
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Graduate Pressure in stars from photons vs. electron/positron pairs
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Undergrad Degeneracy pressure and interactions
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High School What Are Some Math-Based Topics for an Astrophysics Project?
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Graduate Dark Energy, Light, the Universe, and Black Holes
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Undergrad Angular size of Venus: Is my math correct?
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Graduate Some questions about energy conservation
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High School *Quick question: When is VENUS visable in the sky in this period ?
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Graduate Why Doesn't Light from the Big Bang Get Stretched Out?
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Undergrad Coordinates of Planets: An Astronomer's Guide
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Graduate Will the Planck Satellite Illuminate Loop Quantum Cosmology Insights?
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High School Tele Vue / Meade laser test: question
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Undergrad Using Sloan Digital Sky Survey to find Planets
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Undergrad Theory of the end of the universe
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Undergrad How Do You Calculate the Minimum Velocity to Escape the Solar System?
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Undergrad Polar coordinates of solar system
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Why can't we invest in privately owned Space Companies?
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Graduate Exploring Primordial Universe w/ QUBIC: 400 Horns at 100 mK in Antarctica
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High School How can I view a star catalog in a txt file?
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Graduate Is the Universe Analogous to Water with Entropy and Symmetry?
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Graduate Understanding Radiation Pressure and Its Role in Star Dynamics
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