Astronomy, Astrophysics, Cosmology Forum

Graduate Could Sirius A/B Trigger a Supernova?

Graduate Unusual object I saw in sky in Boston area

Graduate Matter-antimatter basis for dark energy

Graduate An expanding universe, part of a bigger leading edge?

High School Does blackhole have strong magnetic field?

Graduate What epoch of the universe's evolution would be most conducive to life?

Graduate Something majorly wrong with this paper?

High School What is at the center of the universe?

Graduate CMBR - a possible alternative explanation?

Graduate What is the relationship between gravity and dark matter in the universe?

Graduate Got a link for the angular-size redshift relation?

Graduate Do different photon colors follow different paths in curved spacetime?

Graduate Heard anything about GPB results?

Graduate Light cone and causal sphere visualisation for determinism

Graduate Big Crunch or Big Rip? Universe's Future

Undergrad Velocity to Keep Object in Orbit Above Moon - Jeffrey

High School Why the sun/moon looks bigger at the sunset/rise?

Graduate Cosmography: Measuring Universe Expansion via Supernova Data

Graduate What causes the squiggly orbit and how can it be eliminated?

Graduate How could a spaceship mimic gravity?

High School Expanding into Astrophotography: Seeking Recommendations for a £300 Telescope

Graduate Should early universe claims require evidence of past physical laws?

Graduate How can space expand?

High School Measuring Distance to Understand Hubble Constant

Graduate Why Dark Matter? Questions on Scientific Inquiry

High School Quick (Most likely simple) Question

Stargazing Heres my pic of m36 taken the other night

Undergrad WHY is the sun red during rise and set

High School Where Do We Look When We See the Milky Way from Earth?

High School Does distant starlight fade as the universe expands?

Graduate Expansion of the Universe and the Limitations of Hubble's Law

Graduate Is MOND theory a viable alternative to dark matter?

Stargazing My Latest M-51: A Comparison with Previous Attempts

Graduate Effect of Sun movement on Planetary orbits?

High School How do astronomers calculate the distance to an object using trigonometry?

Undergrad Astronomy vs astrophysics vs cosmology, and Guth's free lunch universe

Graduate Solutions of Friedmann Equations

Graduate What If the Moon and Earth Were Twin Planets?

Graduate Orbits of Andromeda and Milky Way Galaxy About Each Other

Graduate Is the trampoline analogy an accurate representation of space-time curvature?

High School Celestron C11 auto three-star alignment slewing incorrectly

Undergrad High Velocity Impact of Planets - Atomsphere question

Graduate Why don't planets show detectable dark matter effects?

Graduate Is universe expansion a property of spacetime itself rather than its contents?

Graduate Is There Evidence for Handedness in the Universe?

Undergrad Experiments that provide evidence for the expansion of the universe

Undergrad Earth's rotational speed when its gravity is 5.0m/s2

Undergrad Recommendations for learning radiative transfer physics

Undergrad Spacecraft travel time accelerating halfway at 9.8 m/s²

Graduate Can Time and Motion Be Separated in an Expanding Universe?

High School Why would the universe end with light escaping into space?

Graduate Where does Earth get energy to move through an expanding universe?

Graduate How Is Total Radial Velocity Determined in Binary Stars?

Undergrad Getting started with astronomy and astrophysics self-study

Graduate Big Bang and Infinite Universe Theory

High School Can Aliens See Events from the Past?

Graduate How big is the area of influence around Lagrange L1 and L2 points?

Undergrad Is the Moon's Rotation a Coincidence?

High School Why are moon phases more visible in evening than morning?

Graduate Alternatives to the FRLW model for a presentation

Graduate Does this model correctly show how we see the CMB today?

Graduate What are the Detailed Steps and Mechanisms of Stellar Evolution?

Graduate Lunar Laser Rangefinding: Testing GR's Gravitomagnetic Phenomenon?

Undergrad Universal Gravitation and orbit

Undergrad Information and facts about Cepheid variable stars for a report

Stargazing A rough calculation on the duration of lunar eclipse

Graduate No Big Bang? Endless Universe Made Possible by New Model

High School Could the Moon's Shape Explain Why We Only See One Side?

Graduate Gravitational Potential Enery Problem

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Stargazing Watching the Lunar Eclipse on March 3rd?

Graduate Is the Universe's Oscillating Theory Inefficient?

Undergrad Could a Giant Iron Planet Form a Black Hole?

Graduate Cosmic clocks and gravitational energy in inhomogeneous universe models

Undergrad What is the vector equation for escape velocity?

Graduate Where Can I Find Data on Stellar Types and Their Locations in the Milky Way?

Graduate Is Hu and Dodelson's standard cosmological paradigm paper a good reference?

Graduate Explain p-process in nucleosynthesis

Graduate Charged particles from our Sun travelling too fast?

Graduate Could gamma ray bursts result from electron-positron annihilation?

Graduate Topics connecting quantum mechanics and astrophysics for a presentation

Graduate Stephen Hawking's Theory of Everything and Imaginary Time

Undergrad Doesn't dust or debris collect at the L4 and L5 Lagrangian points?

Graduate Big Bang afterglow fails intergalactic shadow test

Undergrad Astro simulation program problem - program bugs?

Graduate Chapter07.pdfCan Killing Vectors Derive the Schwarzschild Metric?

High School How is a Comet Defined?

Graduate Is Every Point in The Universe a Microcosm of the Whole of Creation?

Graduate Is the Universe Expanding Faster Than the Speed of Light?

Graduate Cosmic clocks, cosmic variance and cosmic averages by Wiltshire

Graduate Planetary formation and effects of gravity

Graduate Nucleosynthesis with the Big Bang and the Supernovas?

Undergrad What would happen if I were to near and be consumed by a black hole?

High School Could the moon still be vibrating from its formation?