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 Directing Space Junk to the Moon: Feasibility & Benefits
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Stargazing Solar Eclipse Captured - See Photos & Video of My 3.2MP Camera
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High School Hubble's Staircase Effect: What Caused It and How Was It Fixed?
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Undergrad The firmament is not as we see it, but
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Graduate Do Pulsars Emit a Sonic Boom in Space?
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Graduate Mass of star as function of Luminosity, Temperature and size
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Graduate Light speed and gravitational matrix
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High School Which Would Reach Pluto First: Light or Stick Movement?
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Mysterious Martian 'Forests' Discovered
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Graduate Is a Giant Moon Essential for Life on Earth?
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High School The Moon moves away from the earth - Is the theory correct ?
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Undergrad Could This Be a Nova or Supernova Seen on Dec 26?
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Graduate Dark Matter Spin: Is WIMP DM Different?
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Aurora borealis over India is it possible?
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Graduate Some questions mostly dealing with large objects in space.
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Graduate How does a collapsing core become a black hole?
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Graduate Magnetic diffusivity : significance?
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Graduate Singularities, dark matter, and dark energy. A connection?
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High School Question: what exactly is a singularity?
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Graduate Using stars random distribution to determine presence of gravity
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Graduate Are Spiral Galaxies Truly Spirals or Just an Optical Illusion?
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Undergrad Questions about Black Holes: Can Objects Survive? Can Light Go Through?
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Graduate Space Elevator: Carbon Nanotubes, Lasers & Beamed Energy
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Undergrad Converting Intensity into magnitudes
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Graduate Neutron Star Collisions: Effects & Stages
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Stargazing What is the bottom limit of telescopes and why can't they detect visible light?
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Undergrad Can Black Holes Consume the Entire Universe?
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Graduate Nearby supernova risk discussed by Sigurdsson
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Graduate T Pyxidis Supernova: Energy Release Compared to SN1054
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High School Does the moon cause the flux and reflux of the tides?
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Undergrad How Do We Measure the Size of the Universe?
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Graduate Gravity on the surface of Gliese 581 d
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High School How did universe start to expand
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Fermi Telescope Spots Giant Explosion in Space
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Graduate How to calculate r.m.s radius of a N-body system?
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Graduate Do black holes evaporate or go bang ?
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High School See the Diffraction of Moon Light at Night
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Graduate Shouldn't All Black Holes Have EM Wave Halos?
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Possible misenterpretations of the known universe
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Graduate Cellular phones and reverse SETI
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Graduate Understanding Magnitude Systems in Extragalactic Imaging
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Graduate Producing a CCD Image: Corrections, Calibration, Subexposures
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High School What is the Direction of Orbiting Planets around the Sun?
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Graduate Potential Vacuum Energy: Does it Double Every 11B Years?
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Graduate Cosmological constant or dark energy or vaccum denisty/energy/energy density
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Graduate Confused about the event horizon
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Graduate Is Space-Time Really a Woven Fabric?
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Undergrad How to calculate the orbit of a minor planet?
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Undergrad Why Do Some Galaxies Have Warped Structures?
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Undergrad Why has no one seen Neptune with the naked eye?
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Undergrad Is dark matter hiding in plain sight?
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Undergrad Does Gravity Affect Nuclear Reactions in Space?
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Undergrad Question about expanding universe VS gravity pull.
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Undergrad Are LMC, SMC approaching the Milky Way ?
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Undergrad Qualifying Radiation Detectors for Space: Homework Help Needed
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Graduate Why does gravity cause lower orbit speed at smaller radii?
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Undergrad Death of Mars: How a Volcano Could Trigger Planetary Extinction
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Undergrad Calculating Kinetic Energy for Rotating Planets
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Stargazing My New Telescope - Review and EP Advice
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High School Is a Used Telescope a Good Choice for a Beginner Astronomer?
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Graduate Why are blue-shifted galaxies concentrated in specific sky directions?
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Undergrad What is the true scope of our universe?
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Graduate Mercury's Orbital Precession Anomaly
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High School WR104 Gamma Ray Burst: Fact or Fiction?
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Undergrad Astronomers use earth-based spectroscopy
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Is Nibiru Really Going to Collide with Earth in 2012?
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High School Will the Moon escape Earth's orbit in billions of years?
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Graduate How to Calculate the Scale of Venus's Atmosphere Using the Barometer Equation
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Undergrad Calculate Aphelion Distance & Velocity of Comet at Perihelion
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Graduate What Is the Temperature Differential of Hawking Radiation?
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Undergrad Is There a Massive Time-Image Gap in Observing Distant Galaxies?
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Undergrad What Causes Pluto's Elliptical Orbit Around the Sun?
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High School Are Quasars Still Present in Our Universe?
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Graduate Cephid Variables: Finding Distance from Parallax & Magnitude
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High School How do I calculate light years to years?
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Undergrad Transmission Bandwith though space
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Undergrad Trying to find out how exactly we find out how big the visible universe is.
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Dark matter discoverd? link inside
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Stargazing A simple refractor homemade telescope
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Undergrad Are AGNs or GRBs a greater danger for life on Earth?
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Graduate Super-earth transiting nearby star
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Undergrad What Can the Gravitational Binding Energy Equation Tell Us?
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Undergrad Is there cyclic motion of galaxies?
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High School Are the planets where we expect them to be
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High School How do spaceships move in space without any propulsion source?
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Undergrad How Can Physics Enhance Your Science Fiction Space Adventure?
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High School Can We Send a Probe to Proxima Centauri?
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Undergrad One question about Parabolic and Hyperbolic trajectory.
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Undergrad What Are the Key Components That Influence Gravity?
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Graduate What is the Latest Exoplanet Catalog from Geoff Marcy and Paul Butler?
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Graduate What is GJ 1214 b: A Super-Earth Water World Orbiting a Red Dwarf Star?
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High School Big Bang Theory: Fact or Fiction?
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Undergrad Does the sun have angular momentum?
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Graduate Rotation Curves and the Influence of Stellar Mass on Orbital Velocity
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Undergrad Find Apparent Magnitude of Binary Star System w/o Distance
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Huge comet seen on soho web page.
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Undergrad Understanding the Sun's Galactic Coordinates
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Tabulation of the Standard Astronomical Filters
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Undergrad Understanding Units of dex^-1 in Number Density Measurements
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Undergrad Liquid water on Venus in early history.
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