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 Unveiling the Mysteries of Dark Matter
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High School Term for the path of the subsolar point
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Graduate Does the mass of a blackhole remain the same if it is not feeding ?
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Graduate Meaning Of Permeability Of Free Space
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Undergrad Understanding Gravity & Orbit in Our Solar System
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Undergrad Nebulae, as seen from the inside
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Graduate Saturn's north pole hexagon vortex ring
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Graduate Initiating mechanism of supernovae
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Graduate Why does time stop in the event horizon of a blackhole?
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High School How the planets get their spherical shape
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Graduate Help me derive the relativistic equation of motion for the Universe
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Lenticular Galaxy - Formula for Probable Location of Stars
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Undergrad Trying to start a space club at university, help?
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Undergrad Atmospheric Extinction: How Deep Can 20/15 Vision See?
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Graduate Astrophysics in a quantum universe
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Undergrad Model to draw an absolute straight line
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High School Hubble Telescope: What's the Big Flap/Door?
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Undergrad Tesla Coil Thruster: Could it be Possible?
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Graduate M67 Cluster Study: Books & Articles on Dynamics & Open Clusters
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Graduate Difference between micro black hole and primordial black hole
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Undergrad Is it possible for one celestial body to trail another indefinetly?
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High School Can someone explain thoroughly the celestial sphere
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Undergrad Question about Cosmic Background Radiation
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Undergrad How Many Unique Points Exist in a Region of Space?
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Stargazing Which Telescope Under $1400 Offers the Best Planetary and Deep Space Viewing?
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Undergrad No need for complications - Simple clear steps
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Undergrad Is there red shift evidence for light?
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High School Red shift of light from galaxies
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High School Is the total amount of water on the planet constant?
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Graduate Speed of Swallow of a Black Hole
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Graduate What's really down in a BH? (a Planck star)
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Graduate Galaxy separation faster than the speed of light
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Graduate Are Ionospheric Scramjets possible?
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Undergrad What is the equation of the orbits of things in space?
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Graduate Thermonuclear fusion in accretion disks?
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Undergrad Stellar Classification Limits: Temperature & Magnitude
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Undergrad When Will the Planets Align Again with Varying Year Lengths?
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Graduate G Magnitude to V magnitude stars in a CCD
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Supernova in M82: Astrophotographers Wanted
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High School Oxygen Needed for Combustion Propulsion in Outer Space
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Graduate How Does Resonance Affect Satellite Orbits?
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Graduate Can you view objects that moved beyond the event horizon?
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Graduate Can Superconductors Shield Spacecraft from Cosmic Rays?
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Graduate What is the temperature of the CMBR?
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Graduate How is the Big Bang producing singularity not a black hole?
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Graduate Usage of doppler effect to measure speed of a galaxy
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Graduate Why does geopotential not take into account the rotation of the Earth?
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High School Where Can I Find a Detailed Ecliptic Monitor for Tracking Solar Terms?
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Graduate Is Spacetime Infinitely Elastic or Does it Have an Elastic Limit?
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Graduate Is there any evidence for universe still expanding?
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Graduate Could Earth Capture a SECOND Satellite the size of the Moon?
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Graduate Big Freeze: Entropy or Dark Energy?
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Undergrad Could the universe be a giant spinning teacups ride?
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High School Is Kepler 22 Visible from Earth with a Telescope?
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High School Which Layers of the Sun Emit Visible Light, UV, IR, and X-rays?
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Graduate Hawking's new paper - no BH, no EH
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Graduate Proxima Centauri's Unprecedented Passage
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Undergrad Calculating what latitude aurora is visible using KP Index
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Graduate Blackhole radiation v Second Law
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Graduate Ratio of positive to negative hydrogen ions in the universe?
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Undergrad Would the outer planets in our solar system survive a supernova event?
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Undergrad Problems understanding how universe has no center.
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Undergrad How do you find the temperature of the boomerang nebula?
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Undergrad Can Light Alter the Velocity of Asteroids in Space?
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What Makes the Metric System Essential for NASA's Mars Mission?
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Undergrad Relationship between Gravity and Density
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Graduate A quick question from a layman about folding space time
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Do Stars Have Van Allen Radiation?
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Undergrad Why do some nebulae form into stars while others remain diffuse?
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Undergrad How to Determine Absolute Magnitude
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Stargazing Single-dish radio telescope aperture
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Graduate Universe Expanding - Effects On Gravity?
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Graduate Latest research in multidimensional space.
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Graduate How are elements produced in stars after iron?
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Graduate What speed is required for a 30-year journey to Alpha Centauri?
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Graduate Is Dark Matter Actually Energy with Gravitational Effects?
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Graduate Why Does Iron Take More Energy to Create Fusion Than Other Elements?
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Graduate What is the nature of information in black holes?
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Undergrad Could gravitational lensing prove the universe to be older?
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Undergrad Saturn-Sized Star Will Live For 12 Trillion Years
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High School Hubble Picture Crushes Your Sense of Scale
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Graduate What will be the trajectory of space objects?
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Undergrad How can we improve asteroid detection to prevent future impacts?
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Graduate Elliptical Orbits and Resonance of Eccentricities
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Graduate What Are the Key Findings of the Pulsar Radio Astronomy Experiment?
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Graduate PSR J0348+0432, Pulsar with white dwarf companion
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Graduate How does one measure the angle of Sun and Mars at different time?
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Undergrad Coronal Mass Ejections - Would we be able to
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Graduate Is Self-Adjusting Isotropy a Valid Concept in Gravitational Theory?
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Graduate Hulse-Taylor pulsar and GR what if orbital velocities were higher?
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Stargazing What Can I See with My Celestron FirstScope?
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High School Gravitational Force: What Causes It?
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Graduate Could Stereoscopic Imaging with Heliocentric Satellites Revolutionize Astronomy?
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Graduate Neutron Stars vs Atoms: A Comparison
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Undergrad How did Kepler know that the time of Mars' orbit was 687 days ?
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High School Do less bright stars have redder spectrum?
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Graduate Question about extreemly large black holes.
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Graduate Gravitational Attraction, Electromagnetic Radiation and Dark Matter
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Undergrad What happens to meteors after they vaporize?
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Graduate Magnetic confinment of plasma/sustained fusion
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