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.
Lunokhod 1 found But why lost in the first place?
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Understanding the Debye Length in Plasma Physics
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Extrasolar Moons: Could There Be Earth-Sized Worlds Around Gas Giants?
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What is and is not Mainstream Astrophysics?
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What Insights Can Age, U-B, B-V, and V Data Provide About Star Clusters?
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What will the universe *look* like in 15 billion years from now ?
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Is there a term for the vertical elongation of a planet?
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Black Holes emitting jets of gas?
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Do MECOs Challenge the Existence of Classical Black Holes?
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How Much Would Your Weight Change on the Surface of the Sun?
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How does the velocity of light change in the vicinity of a black hole?
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Stargazing What are the best telescopes for beginner astronomers on a budget?
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Is There Mathematical Proof That Stars Are Still Being Formed?
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Transfer orbits for dummies A hillbilly tutorial.
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Eccentricity and specific mechanical energy
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So, is it correct to measure centrafugal force due to a planet's rapid orbit?
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Can I find a free 2010 sky almanac on line?
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Uncovering the Mystery: Inertial Energy and the Standard Model Explained
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What Would Happen if a Gamma Ray Burst Hit Our Sun?
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Exploring the Angular Size-Redshift Relation in Cosmology
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Observable Boundary of Expanding Universe: Is There a Limit?
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Ice Discovered on 24 Themis Asteroid
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Jupiter-sized Planet Lurking in Oort Cloud?
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Space Travel Videos: Find 10-20 min Video for Seminar
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Singularity and Anti singularity
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Could Tachyons Exist in a Parallel Universe?
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Do Astronauts See the Earth Spin?
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Is the solar brightness dependant on how many solarspots
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How to Derive β and Identify Superluminal Motion?
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Why Are We Trying to Reach Galaxies Drifting Apart at Light Speed?
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How to Determine Right Ascension and Declination from Keplerian Elements?
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Where Does the Lost Energy of Redshifted Photons Go?
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Stany asked about LHC BH creation
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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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What remains of an atom is ripped apart?
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Arcsecond size of the Andromeda Galaxy
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Can True Zero Velocity Be Measured in Space?
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A strange informataion is ot realy
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Is there a place in space where there is no energy?
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Need Help Answering Astronomy Questions? Download the PDF!
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Black hole/Hawking radiation thought experiment
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Explaining Quasar Feedback for the Struggling
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Can the force of gravity from a Black Hole be escaped?
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Nuclear Decay Earth Sun Distance
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What Are Cosmic Waves and Their Impact on Earth?
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Three-Body Problem: Soluble or Insoluble?
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Planet Rotation: How Is It Possible?
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What happens to an astronaut who enters the event horizon of a black hole?
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Astronomical data in an Ephemeris
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Questions About Space: Get Answers Here
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What is the size of a black hole?
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How Does the Marcus Conjecture Connect CMB Energy Loss to Dark Energy?
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Gravitational distortion of black holes
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How to Calculate Energy and Power from Milky Way's Radio Emissions?
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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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Violation of conservation of energy by expansion of the universe
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Can a White Hole Exist as the Opposite of a Black Hole?
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Being shot by a bullet in space. Damaging? Why/why not?
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Why are Stars Not Visible in Astronaut Photos?
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Question about proton decay and black hole evaporation
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Need Help, trying to get a grasp about the universe.
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How does one describe the energy of space to the public?
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Fireball in Sky: Cause & Explanation
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Physics of creating a deliver-to-Earth-in-future signal
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How Can Two Tidally Locked Planets Coexist Without Catastrophic Repercussions?
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Is the Earth's Thermal Output Constant Compared to Other Interstellar Cores?
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Hohmann Transfer: Maximum Radii Ratio
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A few different questions and concepts
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13.5 billion year age versus 93 billion due to spatial expansion?
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Calculate the redshift of a galaxy that is 650 Mpc away
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Explaining Dark Matter: A Cooling Theory for the Missing Mass
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Relativistic mass increase due to high temperatures inside stars?
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Speed of Light and Size of the universe
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How Does 3D Distortion Affect the Space-Time Fabric?
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Is Chaotic Inflammatory Theory a valid theory in the field of physics?
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Developed an interest in, Astronomy? Astrophysics?
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Forming a Star: What Drives Gas & Dust Clusters?
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Quasars: Are We Measuring Them Wrong?
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What is the electron density of stars in their atmospheres?
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How can you measure the mean density of a neutron star
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Parabola for 18 aluminum mirror
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Can an Atom Become a Black Hole?
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Planetary orbits in a Binary Star system.
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Query - could a comet impact create a wormhole?
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Can Photons Orbit a Black Hole?
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Unveiling the Fascinating Drake Equation and its Fame
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What is the meaning of 'not perturbative accelerations' in astrodynamics?
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Lost energy of red shifted photons
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Fisheye Lens (alt/az) to Flat (RA/Dec)?
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Dynamic Event Horizon: The Effects of Tidal Gravitational Forces on Black Holes
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Can You Breathe in Space While Rockets Fire?
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Canis Major dwarf galaxy *thought* to be our closest neighbor?
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What is the proportionality constant for the Sun's gravitational force?
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Can Matter Escape a Black Hole's Gravitational Pull Beyond the Event Horizon?
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Harnessing Energy: What Would Alien Engineering Look Like?
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Moon's Lack of Atmos. vs Titan's Abundance
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Detection of gravitational waves
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