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 Humidity when T is not constant in space
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Undergrad What Causes the Ring Current in Earth's Magnetosphere?
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Graduate Hubble scale and energy density during inflation
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High School Is it possible Earth is a black hole?
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Undergrad Entropy and Expansion in a Simple Universe
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Undergrad What is the purpose of cosmological simulations in understanding dark matter?
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Undergrad How Can Data Constrain the Number of e-Folds During Inflation?
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Undergrad Does a black hole cut the fabric of spacetime as it changes
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High School Why Can't We Find the Centre of the Expanding Universe?
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High School Is Dark Matter physics low or high energy physics?
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Undergrad Sun's Magnetic Field, Global Warming
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Graduate Gravitational waves: effect of frequency on strain
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High School The Early Universe and the Laws of Physics
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Should we invest in Mars Exploration
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High School Is Space an Object Capable of Bending?
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High School What is the true meaning of the Big Bang?
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Undergrad Are quark stars a realistic solution to the black hole singularity problem?
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Undergrad How will the universe empty out?
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Undergrad Sun elevation for ISS visibility
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Undergrad Testing the information loss problem
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Undergrad How far out are the probes that were sent out
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Undergrad Entropy Change in Time of Universe
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High School What is the origin of the Gibbons-Hawking temperature?
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High School The Earth's magnetic field and moon
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Graduate Is Dark Energy an Illusion? A Closer Look at Concordance Cosmology
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Undergrad Does the number of causal patches increase bc of expansion
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Undergrad Consequence of curvature of spacetime
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Undergrad Do particles create space over time? Is that expansion?
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Stargazing Understanding Kidney Beaning in Wide Field Eyepieces
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Undergrad Where to find in-depth info about each star's composition?
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Undergrad How do we know we are looking back in time in space?
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Graduate What Causes a Shift in Cosmic Ray Distribution on Earth?
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Undergrad Argument that a maximum density Universe expands linearly
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High School Super-Earth Found in Habitable Zone of Nearby Red Dwarf
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Why colonize Mars and not the Moon?
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Undergrad Can negative pions replace electrons in atoms?
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High School What is meant by the size of the early observable universe?
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Undergrad Where Would Ancient Intelligent Life Have Seen Cosmic Background Radiation?
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High School Lawrence Krauss and shortening the lifespan of the universe
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High School Could Boltzmann Brains Become a Reality in the Far Future?
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Graduate Why use Earth as a gravity assist?
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High School Does Negative Mass Play a Role in Hawking Radiation?
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High School How Does Space Expand? Understanding Universe Expansion
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Undergrad Plateau models of inflation after Planck
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High School Why did Aristotle arrange the planets in this order?
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Undergrad Oldest galaxy to date: UDFy-38135539
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High School Celestial Mechanics: Eccentricity of Orbits
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Undergrad Will the Universe one day become smaller?
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Undergrad Questions about the lifecycle of stars
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Graduate A cosmological expansion problem too difficult for me
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High School Is the Expansion of the Universe Uniform?
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Undergrad Are White Dwarfs Stars? Understanding the Classification and Characteristics
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Undergrad CERN n_TOF experiment: 'Age of the Universe'
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Undergrad Observing Naked Singularities: Implications for Quantum Gravity
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High School Do we still live in a Big Bang Singularity?
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Undergrad Is it possible to travel between the multiverses?
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Undergrad Using big data to identify astronomocal data bias
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Stargazing When and where is the best time to view the 2014jo25 asteroid?
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High School Why doesn't dark matter reside in gas clouds?
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Undergrad Why Can We Still Observe the Cosmic Microwave Background?
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Undergrad Curvature and the size of the Universe
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Undergrad Is there a relationship between dark matter and anti-matter?
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Graduate Micrometeorites and Karman effect
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Undergrad Math doesn't add up: stars + planets < particles in universe?
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Graduate Understanding Expansion of Space
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High School Where have we looked, or are looking, for life?
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Graduate Spectral Classification Syntax for Binaries
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High School Will eLISA have the potential to detect early universe GWs?
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Undergrad What causes retrograde rotation in planets and moons?
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Undergrad Energy-momentum tensor and Friedmann Equations
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High School Naive Calculation of the Age of the Universe
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Undergrad Big Bang timing: according to what frame of reference?
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Undergrad Is a superflare capable of changing a planets orbit?
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Undergrad Can we predict the Sun's path accurately?
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High School An exercise related to the mass of the Milky Way, sort of.
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Stargazing Considerations for size of telescope survey
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High School How can we see Background radiation
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High School Is the Universe Truly Eternal or Just a Temporary Fluctuation?
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Undergrad Question about a magnetic dynamo on tidally locked moons
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High School Does every elementary particle eventually decay into quarks?
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Undergrad Defending the Earth from meteors using lasers
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Undergrad Zero G Health Risk: Effects & Readjusting to Earth's Gravity
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Undergrad New Wired article on "where's the antimatter"
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High School Finite Universe vs. Uncertainty Principle
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Insights Q&A With Universe Today's Fraser Cain - Comments
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High School Does the Big Bang Expansion Include All Objects in the Universe?
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High School Finding Black Holes: Possible or Not?
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Undergrad Observation of photons from CMB by different observers
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High School How do black holes attract light?
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High School Just how Powerful is Computer Science + Astrophysics?
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High School Space expanding or Time speeding up? Part 2
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Graduate End of Inflation: Definition, Meaning & Models
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High School Conservation of Energy and Expansion Redshift
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Undergrad Where on the Moon should the first Moonbase be?
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High School Is Jupiter's Great Red Spot Hiding a Massive Volcano?
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Graduate What is the formula for calculating the Ascendant?
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Undergrad Inflation, horizon-problem and thermal equilibrium
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High School What do the letters in the solar sail equation denote?
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High School Is it possible to compress the space without gravity?
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Undergrad How to embed the universe in R^4
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