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.
Undergrad Where can I find a comprehensive online database for stellar data analysis?
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High School Universe age?, I never really understood that
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Undergrad Type IV Civilizations - Info & References
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Undergrad Position of a Body on a Hyperbolic/Parabolic Orbit with Respect to Time
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High School Nonexistence outside the universe
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Graduate Matter less Neutrons behave the same Less Inertia?
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Stargazing Coronal mass ejection arriving during a solar eclipse
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Undergrad Please explain Dopler effect of light
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High School How to become an astrophysicist or an astronomer ?
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Undergrad Angle of crab pulsar to the ecliptic
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Graduate The speed of light, the term light year , and reference frames.
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Graduate Two-Bodies Problem REAL SOLUTION
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Undergrad Do we want to sent probe to Newly discovered planet 'Kepler-22b' now?
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Undergrad What is the efficiency of solar energy in geosynchronous orbit?
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Stargazing Which Mid-Priced Telescope Should I Choose?
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Graduate Black Hole Falling in / Observer Perspective Question
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Graduate Just how spherical is a neutron star?
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High School Is it true that the earth's rotation is slowing down?
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Graduate Can Black Hole Evaporation Preserve Entropy While Losing Mass?
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High School Difference between shock wave and shock ?
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Undergrad The meaning of z number in red shift
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Graduate Universal Expansion and the Distribution of Light
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Graduate Could a Neutron Star's Color be Rayleigh-Jeans Blue?
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High School Indoor Astronomy: Viewing Options for Cold Places
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Undergrad Why does Venus have an atmosphere?
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Undergrad Life on Europa vs. Jupiter's Electromagnetic field
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Graduate A question on virtual antiparticles and Hawking Radiation
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Graduate Why Is a Distant Galaxy Blue Despite Redshift?
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Icy(?) Comet Survives Pasage thru Solar Corona
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Graduate Are Black Holes Deceivingly Still?
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Graduate Dark Energy & Expansion of the Universe; Really ?
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Undergrad Why is Venus's atmosphere so hot?
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Graduate Why Do Pulsars Emit Radiation Despite Being Current Loops?
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High School Martian Pole Star: Same as Earth's?
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Undergrad Are Black Holes Proven or Just Theoretical Constructs?
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Undergrad Is Black Hole Gravity Strong Enough to Crush Earth into a Watermelon?
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High School What Causes Sunspots and How Do They Affect Solar Brightness?
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Undergrad Can Scientists Capture Images of Distant Stars Like Betelgeuse?
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Undergrad Neutron star and white dwarf material
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Undergrad If you leave Earth traveling at .01c can you reach Saturn in 6 days?
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Graduate What Causes the Expansion of the Universe?
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Supernova SN 2011fe Still Alive and Kicking
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Graduate The resulting mass of the remnant of a core-collapse SN
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Undergrad I think the universe is slowing down not speeding up
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Graduate Causal entropic principle / entropic principle
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Graduate Black Holes: Falling in and Looking out?
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Graduate What is the current understanding of the galactic magnetic field?
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Undergrad Could Telescopes Ever Capture Detailed Images of Exoplanet Surfaces?
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High School Kepler22b-first exoplanet found in hab-zone of sun-like star
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Undergrad AU and the Circumstellar Habitable Zone
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Graduate Surviving Space: The Impact of Hemoglobin Levels on Human Body in a Vacuum
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Undergrad What Happens When Two Black Holes Collide?
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Stargazing Eclipse of the Moon from Sydney, Australia 10 Dec 2011 video
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Graduate Movement in time/movement in space
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Graduate Mars Atmosphere And Magnetic Field
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High School SECCHI Uncovers What? Near Mercury
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Graduate Influence of metallicity on effective temperature of star
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Undergrad Highest Star Core Temperature: Does Size Matter?
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Graduate Relativistic effects on planetary shear [tidal forces]
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Graduate Is Dark Energy Necessary for the Acceleration of the Universe's Expansion?
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High School Can the Mass of a Black Hole Bend Time and Space?
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High School How realistic are the colors that we see in pictures of galaxies/nebulas?
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Stargazing Ever wonder what happens during a lunar eclipse?
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Graduate Neutron Star Below the Chandrasehkar Limit - Properties & Atomic Matter?
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Graduate What happens when a black hole evaporates?
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Undergrad Half Light Speed Probes: See What Earth Sees
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Graduate Could Our Universe Be Inside a Black Hole?
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Undergrad Impact & Gravitational Effects of Asteroids/Comets on Moons Orbit
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High School Having trouble understanding how We are made from a supernova?
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High School Few Question from a Naive Astro enthusiast
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Fascinated by the space,stars,sky
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Graduate Astronomical spectroscopy and doppler shift.
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Undergrad Problem understanding NBody simulation physics
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Graduate Find the Lead Pursuit Line to Reach a Planet
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Graduate How intimate are the rays of light?
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Why do people ask why life exists?
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Undergrad Does Our Milky Way Stir Up Solar System Collisions?
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Graduate Black hole vs. Black hole, who wins?
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Undergrad What Causes Time Dilation on Mars?
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Undergrad Could a Black Hole Be 10 Billion Times Larger Than the Sun?
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Graduate The Blushing Face of Saturn: Radiance, Luminosity & Habitable Zone
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Stargazing Is the Hubble Telescope Obsolete?
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Undergrad Using Rspec to Interpret Stellar Spectra
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Undergrad How Were Daily and Annual Cycles Explained Before Copernicus?
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Do you think astronomy is a useful science?
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Graduate What is the rate at which the CMBR is cooling?
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Graduate Computation of Solar Position and Velocity Vectors (Meteor Orbit)
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Undergrad First post ever. Be Kind. Solar orbit questions
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Bill O'Reilly the master of Astronomy?
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Graduate About the hot gas around NGC 4555
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Graduate Anyone have access to the 1955 Nautical Almanac?
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Graduate How Can I Solve a Two-Body System Using Kepler's First Law?
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High School Can we get caught by surprise by an asteroid?
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Graduate Is the Mass of Super-Massive Black Holes Factored into Dark Matter Calculations?
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Undergrad Parallax formula derivation problem?
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Graduate Observed planets in binary star L4 or L5?
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Graduate Is gravity a force or a property of space?
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Graduate Is the Oort Cloud Large Enough to Encompass a Multi-Stellar System?
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High School What Are the Orbital Periods of Binary Pulsars?
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High School Can We Still Receive Images from Voyager Probes?
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