Astronomy and Astrophysics Forum

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Join in expert discussion on the topics of Astronomy and astrophysics. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Graduate Where Does the Lost Energy of Redshifted Photons Go?
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Graduate Stany asked about LHC BH creation
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High School How Do I Find Distance Using Redshift?
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Stargazing What are the Limits of Wavelength Detection in Modern Telescopes?
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Graduate What remains of an atom is ripped apart?
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High School Arcsecond size of the Andromeda Galaxy
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Graduate Can True Zero Velocity Be Measured in Space?
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High School A strange informataion is ot realy
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Graduate Is there a place in space where there is no energy?
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Undergrad Need Help Answering Astronomy Questions? Download the PDF!
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Graduate Black hole/Hawking radiation thought experiment
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Graduate Explaining Quasar Feedback for the Struggling
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Undergrad Can the force of gravity from a Black Hole be escaped?
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Graduate Nuclear Decay Earth Sun Distance
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Undergrad What Are Cosmic Waves and Their Impact on Earth?
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Graduate Three-Body Problem: Soluble or Insoluble?
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Undergrad Planet Rotation: How Is It Possible?
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Graduate What happens to an astronaut who enters the event horizon of a black hole?
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Undergrad Astronomical data in an Ephemeris
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High School Questions About Space: Get Answers Here
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High School What is the size of a black hole?
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Graduate How Does the Marcus Conjecture Connect CMB Energy Loss to Dark Energy?
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Graduate Gravitational distortion of black holes
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Graduate How to Calculate Energy and Power from Milky Way's Radio Emissions?
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Graduate Redshifted light from another planet
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Can anybody find a mistake in this Avatar photo?
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Cassini Captures First Ever Video Of Lightning On Another Planet
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Graduate Violation of conservation of energy by expansion of the universe
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Graduate Can a White Hole Exist as the Opposite of a Black Hole?
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Undergrad Being shot by a bullet in space. Damaging? Why/why not?
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High School Why are Stars Not Visible in Astronaut Photos?
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Graduate Question about proton decay and black hole evaporation
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Graduate Why Do Star Systems and Galaxies Flatten in the 3rd Dimension?
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Graduate Need Help, trying to get a grasp about the universe.
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Undergrad How does one describe the energy of space to the public?
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Fireball in Sky: Cause & Explanation
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Graduate Physics of creating a deliver-to-Earth-in-future signal
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Graduate How Can Two Tidally Locked Planets Coexist Without Catastrophic Repercussions?
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Graduate Is the Earth's Thermal Output Constant Compared to Other Interstellar Cores?
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Graduate Hohmann Transfer: Maximum Radii Ratio
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Graduate A few different questions and concepts
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Graduate 13.5 billion year age versus 93 billion due to spatial expansion?
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Graduate Calculate the redshift of a galaxy that is 650 Mpc away
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Graduate Explaining Dark Matter: A Cooling Theory for the Missing Mass
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Graduate Relativistic mass increase due to high temperatures inside stars?
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Graduate Speed of Light and Size of the universe
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Graduate How Does 3D Distortion Affect the Space-Time Fabric?
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Graduate Is Chaotic Inflammatory Theory a valid theory in the field of physics?
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High School Developed an interest in, Astronomy? Astrophysics?
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Undergrad Forming a Star: What Drives Gas & Dust Clusters?
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Graduate Quasars: Are We Measuring Them Wrong?
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Graduate Using Black Holes for FTL travel
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Graduate What is the electron density of stars in their atmospheres?
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Graduate How can you measure the mean density of a neutron star
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Undergrad Parabola for 18 aluminum mirror
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Graduate Can an Atom Become a Black Hole?
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Graduate Planetary orbits in a Binary Star system.
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Graduate Query - could a comet impact create a wormhole?
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Graduate Can Photons Orbit a Black Hole?
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Undergrad Unveiling the Fascinating Drake Equation and its Fame
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Graduate What is the meaning of 'not perturbative accelerations' in astrodynamics?
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Graduate Lost energy of red shifted photons
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Graduate Fisheye Lens (alt/az) to Flat (RA/Dec)?
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Graduate Dynamic Event Horizon: The Effects of Tidal Gravitational Forces on Black Holes
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High School Can You Breathe in Space While Rockets Fire?
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Undergrad Canis Major dwarf galaxy *thought* to be our closest neighbor?
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Undergrad What is the proportionality constant for the Sun's gravitational force?
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Graduate Can Matter Escape a Black Hole's Gravitational Pull Beyond the Event Horizon?
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Graduate Harnessing Energy: What Would Alien Engineering Look Like?
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High School Moon's Lack of Atmos. vs Titan's Abundance
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Graduate Detection of gravitational waves
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High School Measurements between sun and earth
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Graduate Some black holes may actually be Quark Stars
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Graduate Our perception of Euclidean space
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High School Relative locations of earth, sun, moon
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High School I got a Zhumell Z8 Dobsonian. The stock lens is decent
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Graduate Expansion of Universe And Its Influence on Earth Orbit
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Graduate What Insights Does a Black Hole Simulation Provide?
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High School Why Doesn't the Moon's Gravitational Pull Affect Lakes or Cups of Water?
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Graduate What is a Euclidean Wormhole? | Ask Your Question
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Undergrad Meteor Trajectory: Can it Fall Straight Down?
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Graduate Density of dark matter in milky way
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Light is the only thing in existence
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Undergrad Average distance form earth=384,403,000 meters
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Graduate Flat Velocity Curve: Newton vs MOND Theory
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Graduate Discussing Gliese 710's 86% Chance of Hitting the Solar System
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Stargazing XT10i and a Orion Skyview pro 120mm refractor
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High School The big bang theory and why i think its wrong
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Graduate Extrasolar Planets: Questions & Answers
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Graduate Help Calculate Velocity of Supernova Remnant Knot
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Stargazing Suggesting a beginners telescope
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Graduate Does the Cosmic Coriolis Effect Influence Galaxy Spin Direction?
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Graduate Could Gravitons Be the Missing Link to Understanding Dark Matter?
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Undergrad Big Bang: Has Universe Always Been Expanding?
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Undergrad What Makes Living in a Spaceship Without Gravity So Unique?
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Undergrad Mathematics & Astrophysics: Importance & Overview
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Undergrad Accuracy of the exploding asteroids in The Empire Strikes Back movie
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Graduate Direct observation of early universe's higher density
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Graduate Cosmological Constant: Why Lambda Units are 1/m^2
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Graduate Harvesting Asteroids: Soft Landing Nickel/Iron Megaton on Earth?
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