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.
Absorption in 'CMBR' wavelengths - observations? processes?
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Can someone help me identify this object in my photo?
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Why Does Planet's Molten Core Create Magnetic Fields?
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Space & Military: Militarization of Space?
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Can a Galaxy Collapse Inward Over Time?
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Speculation is detracting true astrometry
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What Is the True Nature of Empty Space?
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Stargazing What do you recommend is the best way to clean a lense(telescope)
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Mars rover adds hill climbing to list of accomplishments
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How many tv programs are about astronomy, science?
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Observational Dark Energy - SN1a wiggle room?
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The origin of cold dark matter halo density profiles
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Stargazing How is the principle of the operation of radio telescope?
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If you could go anywhere in time and space
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For those who think life is rare
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Can You See the Entire Universe Before Entering a Black Hole?
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What If the Earth's Orbit Was Changed?
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[astrogeology] measuring atmospheric density
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What resources are available for studying higher dimensional quantum cosmology?
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Mystery Light: Can Anyone Explain What I Saw in the Sky?
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Did condensation accompany the initial big bang expansion?
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Everything about Big Bang theory
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Confused on Orbits: Ellipses vs Circles
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Isn't space expansion expectable?
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Power Outage & Mysterious Sky Objects in My Neighborhood
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1 Parsec = 3.08568025 × 10^16 meters
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A supernova can out light a entire galaxy
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Help: Application of Optical Fibre In Astronomy?
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Does My NBody Simulation Look Accurate?
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Solar Energy Q: Mass of Sun Decrease/s?
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Is Mounting a Telescope on the ISS a Viable Option for Atmospheric-Less Viewing?
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Mature stars in ancient galaxies
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Why Do Planets Rotate on Their Axis?
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What Makes Neutron Stars So Unique?
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Is there a super-massive black hole in the center of our galaxy?
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On the large-angle anomalies of the microwave sky
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Orbit smulation and speed of gravitation
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What is the Chandrashekhar Limit and How is it Calculated?
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How closely could the Moon orbit the Earth
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Free Graphing Software for Polar Coordinates & Irreducable Functions
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Galactic Formation: The Last Galaxy and the Ongoing Creation Process
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How Our Place in the Galaxy Affects Life on Earth
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Who was John Bahcall and what impact did he have on the astrophysics community?
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Telescope Recommendations for Viewing Galaxies & Nebulae in FL
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Black Holes & Universes: Theory & Discussion
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Dark Matter CEUs: Katherine Freese's State of the Union Address
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Stargazing 14mm reflector with a 900mm focal length
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Question: Mnemonic for classes of stars
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What is the White Hole Model of the Universe?
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Is Light's Terminal Velocity 300,000 km/s?
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Theoretical Physics: Lee Smolin's "The Life of the Cosmos"
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Is the Milky Way Actually a Barred Spiral?
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Is the overall charge of the universe positive, negative, or neutral?
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Gamma Ray Bursters: Explaining the Mystery 8 Billion Light Years Away
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Could Other Universes Exist in a Multiverse?
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Does the 3-body problem have stable solutions?
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Water ice in crater at Martian north pole
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What is the field of view of the Hubble Telescope's planetary camera?
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Stargazing Troubleshooting Telescope for Viewing Planets & Stars
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10th Planet resonance with Neptune
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Where's SpaceTiger? Summer Vacation Update
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What is shot noise and how is it estimated in galaxy surveys?
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Three dimension space and one dimension time means
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Perseids a wash-out here :grumpy:
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The path of our planetary bodies
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Maximizing Velocity Excess: The Power of Perihelion Gravity Assists
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What is the fundamental reason for the elliptical shape of orbits?
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Why Do Planets Rotate Around the Sun Without Crashing?
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Law of Two Bodies: Smaller Body Breaks Up
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What is the Newly Discovered Dwarf Planet Beyond Pluto?
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Stargazing Trouble Using Meade 2114 ATTS Reflector
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Recent Photos & Data of Martian Moons Phobos & Deimos
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Which astrophysical journal is the best?
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Stargazing Buying a New Telescope and would like some input.
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FYI - online petition to keep Voyager & Hubble programs going
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Planetary Alignment on my Date of Birth
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Big Bang Implosion: The Symmetry of Cosmic Expansion and Collapse
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The fine tuning problem (all 120 OOM of it)
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Could Self-Replicating Probes Revolutionize Interstellar Exploration?
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Dear Phobos, Janus, and Self Adjoint
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How Did the Michelson-Morley Experiment Challenge the Existence of Aether?
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Mass not intrinsic, but emergent.
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Stargazing Can the Arecibo Radio Telescope Eavesdrop on the Entire Galaxy?
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Can You Imagine a Universe Without Space and Time?
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Can No Movement FTL Travel Revolutionize Space Travel?
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Would a black hole be able to suck-in another blackhole?
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Is the Universe an Infinite Regression of Black Holes?
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How Do Stellar Winds Impact the Elemental Composition of Planets?
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Dark matters seems unlikely to succeed
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How Old Are Third Generation Stars
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Is Dark Matter a Macroscopic Manifestation of Quantum Hidden Variables?
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Is Centripetal Acceleration Relevant in Curved Space-Time?
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Meaning of Planet? Just 8 planets?
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Uneven Cratering of Moon's Surface
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Stargazing Views on schimdt Cassegrain telescopes
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Cosmology Simulations' softwares
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Are Intermediate Mass Black Holes from Population III Stars?
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Pulsars with irregular periodicity radiation
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Planet discovered in 3-star system
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Gyroscopic Space-Drive: How Does It Work?
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