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 Telling time with Jupiters moons?
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Undergrad How Would a Carrington Event Affect Modern Computers?
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Undergrad Looking for data on the orbit of S2 star
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Stargazing Can a Yukon 6-100X100 Spotting Scope View Jupiter's Stripes and Saturn's Rings?
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Graduate Black holes and the accelerating expansion of the Universe
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Graduate HLX-1 brightest ultra-luminous X-ray source known.
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Undergrad Is Voyager 1 Approaching the Oort Cloud?
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Undergrad Gravitational effects of planets on each other
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Graduate Gravitational Conditions: Dust Cloud vs Black Hole
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Undergrad Quasars - how do they emerge from black holes?
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Graduate Best review paper on the observational status of black holes?
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Find Space Video: Gravityless Environment 5+ Mins
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Graduate Black hole size vs. neutron star size
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Undergrad Where in the sky do meteors come from at any arbitrary point in the year?
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Graduate What is the Limitation of Interstellar Communication for Humans?
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Undergrad Amount of iron in the solar system
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Undergrad Why Don't Sunrise and Sunset Times Change Symmetrically?
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Undergrad Kepler's Third Law orbiting planet
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Graduate Searching for Sister Stars in Our Multistar System with Infrared Telescopes
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Stargazing Galilean Telescope: Taking Photos with Digital Camera
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Graduate What Will Happen to Stars in the Distant Future?
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Name of asteroid that'll pass very close
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What gas giant, what moon(s) are split in half and.
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Graduate White Holes: Connections to Other Universes?
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Graduate Estimating the Sun's Present-Day Luminosity
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Graduate Lunar gravity assist en route to Mars
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Graduate Bandwidth of Space: Threshold Capacity and Limitations
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Undergrad What is the Hill Sphere and how is its formula derived?
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Undergrad What is the diameter of star clusters?
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Undergrad How Fast Is Earth Moving Through Space?
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Graduate Expanding Universe: Cooling Matter, Gravity & Isotropy
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Graduate Is the Planck Density a Hopelessly Outdated View?
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Graduate Beyond brown dwarf mass to sustained fusion
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Graduate Light Speed & Expanding Galaxies: A Cosmological Mystery
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Graduate Discovering Chandra X-ray Field of View & Object Size at 500 pc Distance
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Undergrad How do supernovae and hypernovae form and what is the corpse left behind?
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Undergrad Comet SL9 colliding with Jupiter
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High School Why Doesn't Air Get Sucked into Space?
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Graduate Seeing the Unseen: Visualizing a Rotating Black Hole
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High School Kepler-9 b,c planets discovered
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Graduate Is Matter Still Being Created from Energy?
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Graduate Relativistic Effects on our Observations of the Universe
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Undergrad Black holes (didnt know where to put this question)
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Undergrad What the hell is a Johnson V Magnitude?
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Undergrad Question: what is the resistance forming spiral galaxies?
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Closest Mars Approach to Earth in 5,000 Years: Real or Hoax?
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Undergrad Time Frame of Sun on Ecliptic Plane vs Equitorial
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Graduate What is the best sky projection to use for my purposes?
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Undergrad Is the Big Bang Still Happening and How Does it Influence the Universe?
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Stargazing Velocity of shadow of solar eclipse
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Undergrad Ask an Astronomer: Mars and the Moon on August 27
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Undergrad Is cosmic back ground radiation able to somehow not dissapate?
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Graduate How to determine the total energy in the universe
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High School Are There Really Green Stars in Our Universe?
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Stargazing Star gazing with light pollution
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Undergrad Where to Find Journal Papers on Dark Matter?
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Undergrad Alien Contact & the Drake Equation: Agree or Disagree?
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Graduate How Do Particles Transition Between Cells in Physics?
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  • Poll Poll
[Poll] Which scientific breakthrough will come first?
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And i saw a big red glowing ball.
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Graduate Gravity along a shifted sun-earth line?
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Undergrad Basic Question about Star Formation
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Graduate Is the Galactic Coriolis Effect Debunked or Proven?
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Undergrad Photometric data from SDSS fits files
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Graduate I hope this helps answer your question!
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Graduate Non-baryonic Dark Matter: Is There Electromagnetic-Only Matter?
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Undergrad How Long is the Moon's Heliocentric Path and Its Mean Speed?
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Undergrad Wayward Stars: Has Ejection Ever Been Observed?
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Undergrad What Are the Lunar Frequencies and Radiations Impacting Earth?
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Undergrad Balmer Discontinuity: Place & Wavelengths
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Graduate Interesting thought about black holes
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Undergrad Why Did Mars Die? - Unveiling Its Geological Mystery
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Graduate Is There an Infinite Number of Galaxies in an Infinite Universe?
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High School Angular Momentum: Keeping Planets on their Orbit
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Graduate What is the fabric of space made of
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Graduate Could Quantum Mechanics Explain the Mysteries of Dark Matter?
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Stargazing Mars' orbital telescope and ice rock
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Undergrad Has the Gravitational Constant Been Measured on the Moon?
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High School What causes the strange gravity effects on the Moon?
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Graduate Can a Sundial Measure Ecliptic Longitude Accurately?
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High School Gravitation on Planets: Effects on Life
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Graduate Useful Background Reading on Black Holes
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Undergrad What is the impact of the Sun's magnetic field flip on Earth and its satellites?
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Graduate Earth's axis of spin w.r.t. galactic rotation axis
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Undergrad Can someone explain Pulsars and Quasars?
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Graduate Eddy currents due t into the core of the Earth
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High School Why Do Some Months Have 30 or 31 Days While February Has 28?
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Graduate What is Dark Matter Made Of?
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Graduate What is the process for deriving a galaxy's (i.e. Milky Way) wavelength?
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Graduate How to Create Space-Time World Line Diagrams?
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Undergrad CCoronal Mass Ejection Aug 2, 2010: Implications for Earthbound Folks?
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Undergrad Could a Solar Flare destroy life on our planet?
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Undergrad Velocities of earth's atmosphere, exosphere etc
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High School Where is the zodiac located in the universe?
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Graduate Big Bang: Unravelling the Temperature Mystery
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Stargazing Can We Map Matter Beyond the Visible Universe Using the EPR Sky?
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Stargazing My Telescope Adventure: Meade LXD75 SN10
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Stargazing How big of a difference have you noticed with cooling your telescope mirror?
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High School Light Speed and Voyager Space Probes: A Reflection
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High School Why Did Ancient Astronomers Believe the Earth Was Round?
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