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.
High School Edge of the Universe: Is It Real?
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High School Black hole mass and sigma (velocity dispersion)
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Undergrad Spacetime Relativity: Universe Expansion & Our Place in It
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High School The Best Spot to Set Up a Colony on Mars
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Undergrad Explain the orbital physics of the JAXA Tether experiment?
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Undergrad Would the rogue planet in this picture slow Earths spin?
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Graduate Space Radio Software: Get Help from Experts Now!
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Undergrad Carolo Rovelli on infinity in LQC
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Undergrad Length of lunar month immediately after moon's formation?
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Undergrad Can a planet have multiple large moons?
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High School If the universe is expanding at an accelerating rate....
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High School How do we know the stars are not our own light falling back.
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Graduate How is the Trappist 1 system stable?
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Graduate Orbit Estimation: Range & Doppler Measurements for Position & Velocity
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Undergrad Mass and temperature relation in stars
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High School Question about Hertzsprung-Russell-diagram
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Graduate Is the matter-antimatter annihilation observable in priciple
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Graduate Cosmological Redshift distance to where it begins?
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Undergrad How Can I Improve My 2D Newtonian Gravity Simulator?
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Undergrad Dragging a wormhole into a black hole
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High School Information paradox in black holes
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Undergrad Uncovering the Hidden Lepton Number of the Universe
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Undergrad Clusters at center and periphery
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Undergrad What causes the deceleration of a satellite? Space dust?
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Undergrad Probability of not entering de Sitter
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High School Is the Earth Really 4.5 Billion Years Old or Much Older?
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Undergrad Size and shape of a black hole singularity?
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High School Is There an Arctic Circle on the Moon?
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High School How fast is Earth traveling due to the Hubble constant?
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Undergrad Will interstellar travel become more possible in future
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Undergrad On the Moon, could you melt dirt by focussing sunlight?
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Undergrad Why are Lagrange points called libration points, and....
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High School Are Black Holes linked to our Universe & Dark Energy/Matter?
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High School Simplistic question about mass and gravity
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Undergrad Big rip - order of distintegration?
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High School Fine Tuning Constants: Understanding Variables and Ratios | Physics NIST
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High School Could Microbes Really Thrive in the Clouds of Venus?
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High School Is Dark Matter in the 100GeV range
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High School What would happen to the Moon if (at full moon) the Earth disappeared?
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Graduate What Does Prof Krauss Mean About False Vacuum Decay and Cosmology?
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High School How do you know the size/maximum area of a gravity field
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High School What are the applications of solar sails?
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Graduate Angular power spectrum, bias from N weighted events
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High School Need Martian Regolith/Soil Simulant. JSC Mars-1
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Undergrad Determining H value from scalefactor
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Undergrad Have you ever wondered why we can't see the other side of the moon?
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Undergrad Expanding universe and the Boltzmann brain problem
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Undergrad Do Red Dwarfs Favor Rocky Planets and Host Life?
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Undergrad Why is it that Mercury rotates at a faster rate than say Pluto
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Undergrad Can we colonize the Kuiper Belt?
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High School Units for Entropy of Simple Black Holes
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Undergrad Gravitational waves as means for communication
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High School What are the chances of evolution of organisms in space
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High School Cause of Inflation: Link to Dark Energy & Quintessence?
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High School A question about an interesting article on dark matter
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Graduate Observational evidence for accelerating universe
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Undergrad Shape of the universe -- Does it change with time?
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Undergrad Do Event Horizons always contain a singularity?
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Undergrad How do we measure energy density of radiation?
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Undergrad What Evidence Exists for the Universe Before the Cosmic Microwave Background?
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Undergrad Big Freeze and Law of convervation of energy
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Undergrad Guarding Mars' atmosphere with a magnetic shield
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Undergrad Effect of planetary layer densities on trajectories of a satellite
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High School A Long Time Ago in a Galaxy Far....
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High School How can gravity act on a photon?
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Undergrad Was There Another Dimension Shaping Time Before Our Known Dimension?
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High School Light Travel Time: Seeing the Past?
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High School Cosmological Redshift: Where Has the Energy Gone?
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High School Where Was Dark Energy Before the Accelerated Expansion Began?
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Stargazing What is the Explanation for the SECCHI Image of Object Opening a Shield?
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High School What Saturn’s moon, Pan looks like
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High School Exactly how quantum tunneling leads to a Big Bang?
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Undergrad Could FRBs Power Extraterrestrial Light Sails?
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Graduate How can neutron stars have magnetospheres?
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Undergrad Q re early universe matter-antimatter annihilation
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Graduate Neutron Star EoS: Find the Equation of State
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Undergrad What is a Space-Time Crystal?
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Undergrad Predicted sizes of (observable) universe
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High School What is the vacuum at the Karman line?
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High School What are the most likely ways of finding Dark Matter?
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Graduate Space time expnasion, age of universe.
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High School Is 200my enough for galaxies to form
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Undergrad Does Dark Energy drive up Entropy?
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High School Are black holes perfect spheres?
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Graduate What is stochastic heating of very small grains?
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High School The Center of the Milky Way Galaxy?
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High School How Did the Universe Create Itself from Nothing?
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High School How is the Horizon Drop Calculated Due to Earth's Curvature?
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High School Was there ever a state of nothingness?
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Undergrad Software for Analysis of FITS table/spectra
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Undergrad What Causes GRBs: Ampere's Law or Something Else?
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High School Dark Matter Stars: Burning Hot and Invisible
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High School Space Camera Project: Ideas for STEM & Space Exploration
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Undergrad What would happen if you moved a black hole?
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High School What Happens When a Black Hole Interacts with Antimatter?
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Undergrad Effect of rotational inertia on gravity or visa versa
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High School Is Time's Flow Affected by Cosmic and Quantum Scales?
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High School Cepheid variable stars cause of light variance
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Undergrad Do we need Dark Matter or are we just time blind
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High School If something stands absolutely still in the space can it time travel?
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