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.
Graduate Understanding Spacetime: Clarifying Misconceptions and the Role of Gravity
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Undergrad Does Earth's eccentricity change?
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Graduate Will Black Dwarfs Become Iron Stars in 10^1500 Years?
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Graduate Are Black Holes the Key to Understanding the Big Bang?
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What would you throw in a black hole?
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High School Can Pluto Twinkle Like Stars from Earth?
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Graduate Ellipticals vs. spirals colliding
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New Calculated Trajectory for the Apophis asteroid
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Graduate Q: About the relations bitween the inflation and matter's properties
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High School Question about our solar systems orbital path through the milky way
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Undergrad Does the Cosmos Have a Preferred Direction?
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Undergrad Astroid Toutatis year 2012 has effects on Earth and moon
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Undergrad Measuring Sea Level: Tides, Elevation & Distance from Earth's Center
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Undergrad What Catastrophe Could Render Earth Uninhabitable in 40-60 Years?
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Graduate Can CFD Techniques Revolutionize Astrophysics Research?
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Graduate How to Plan a Mission from LEO to the Itokawa Asteroid?
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Graduate Space Elevator Vehicle: Acceleration After Cable Release
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Graduate How does the event horizon of a Schwarzchild black hole nucleate and develop?
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Undergrad Sidereal Time: Clarifying Contradictory Definitions
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Undergrad Can Light Really Be Trapped by a Black Hole?
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Graduate Gravitational slingshot as a weapon
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Graduate Black Hole Energy/Galactic Plane
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Undergrad Why is it difficult to imagine nothingness and infinity?
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High School Why do planets rotate on their axes?
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Graduate Is space warped, or is matter expanding?
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Undergrad Does Doppler effect change the energy of emitted light?
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High School What are the major differences between the 8 planets of our solar system?
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Graduate Black Hole Dimensions: Reversing the Universe's Expansion
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Undergrad Why Are Galaxies Accelerating Away?
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Graduate The Reissner-Nordstrom metric
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Earth from Space: Fresh News at Just $148
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Graduate Hypothetical space station orbiting inside a plasma torus
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High School Some quesitons about Sun and Earh
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Undergrad Is there something that Sun actually absorbs?
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High School Expanding Universe: Galaxies & Matter Explained
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Undergrad How can I calculate the tilt of the Earth using trigonometry?
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Graduate What can be detected in chunk of vacuum?
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Graduate Black Hole Collisions: What Happens?
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Graduate A hypothetical and impossible solution to the origin of the Universe.
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High School Picture of Our Galaxy: How We Captured It
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Graduate Potential valleys in our solar system
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High School Astronomy vs Cosmology: Understanding the Differences Explained
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Undergrad Is our Solar System a large Atom?
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High School Double Crater on Google Mars: 19°53'15.38"N 141°40'48.73"E
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Graduate Where Can I Find Mass Profiles of Galaxy Clusters for Gravity Research?
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Forgotten Astronomical Discoveries: Rejected and Ignored
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High School What Are Some Quick Science Fair Ideas Related to Math and Astronomy?
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Graduate Why Are There Disconnected Universes?
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High School Center of Our Galaxy - Nebula Orbits & Questions
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Graduate Second law of thermodynamics and black holes ?
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Graduate Neutron star collapse can produce GBBs?
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Undergrad Is There Ice on Mars? New Evidence from Fresh Meteorite Craters
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High School If all the empty space of atoms were removed, how big would this earth be?
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Stargazing Can I see anything other than the planets with a 4 telescope?
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Graduate Do wormholes actually exist and can they be used for time travel?
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Undergrad Water on the Moon: New Science Express Discoveries
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High School Stars eventually die because they use up their fuel right?
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Graduate Theoretical Application For Acceleration In Space
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High School Is Planet X Real and Could It Impact Earth?
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Undergrad Star Catalogs within 200 LY of Earth - Needed in Table Format
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Graduate Is a Core Temperature of 3.14*(10^7) K Feasible for a 50 Solar Mass Star?
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Undergrad Why does Saturn's dust form a flat ring and not a sphere around it?
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Undergrad Which statement is true about Redshift and the Hubble constant?
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SETI: Latest News & Updates | The Planetary Society
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Graduate How does inflation fit into the position of the Earth?
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Explore the Stars with Google Earth
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Undergrad Dark Matter: How Do We Know It's Not Just Invisible Planets?
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Giant Ringed Star: Could it Exist in the Galaxy?
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Graduate Spinning and rotation of planets
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Graduate Distant Galaxies - observation methods
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Stargazing Which Telescope Should I Buy for Under $200?
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Graduate Is a change in gravity felt instantaneously on the other side of the universe?
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Undergrad Is Redshift Possible in a Stationary Universe?
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Graduate Can the expansion of the universe be observed even though we are a part of it?
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Undergrad How Does Gravitational Force Influence Ocean Tides?
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Stargazing What is the Wells cycle and how long does it last?
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Graduate What are the key theories used to predict galaxy rotation curves?
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Undergrad How do we determinate the mass of stars
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High School What exactly does radio luminosity mean?
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Undergrad Is or can gravitational force become cumulative?
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High School Moon's path/orbit - is it changing?
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Undergrad Other planets interaction on Earth-Moon System
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Is the Surface Gravity of Mu Arae-c Miscalculated?
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Undergrad Question about origins of elements
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Graduate What Do I Observe Moving Around in Curved Space
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High School Is Our View of Stars Really a Glimpse Into the Distant Past?
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Unveiling the Beauty of the Universe: Hubble's Latest Images in High Definition
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Graduate How Do Radio Astronomical Measurements Convert to Temperature (Kelvin)?
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High School Occultation of Regulus: How Often and Why?
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Stargazing A new telescope can detect a candle across the Atlantic
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Graduate Calculating Planet Deceleration Due to Decreased Gravity
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Graduate Black holes and theories of gravity
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High School Did You See the Mason Dixon Meteor Streak Across Maryland and Pennsylvania?
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Graduate The expanding universe isn't in our neighborhood
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Graduate Question on neutrino emission machanism in neutron star
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Undergrad Japan building space-based power plant
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High School Planetary Orbits: Decay or Spiral?
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Undergrad Evolution of Our Sun's Rotation: From 4.5 Billion Years Ago to Present Day
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Undergrad Question of Galactic Proportions
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Graduate The limit of Ultramassive Black Holes.
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