Astronomy, Astrophysics, Cosmology Forum

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Join in expert discussion on the topics of Astronomy, astrophysics and cosmology. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Graduate Dark Energy & QCD: Federico Urban & Ariel Zhitnitsky's Solution?
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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 Does flat Universe have a center?
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Graduate Second law of thermodynamics and black holes ?
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Water on the Moon: NASA and ISRO Team Up to Confirm H20 Existence
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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 Difference between Dark Energy and Cosmological Constant
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Graduate Black hole merger - what would happen if
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Undergrad Is Time Synchronous Throughout the Universe?
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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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Graduate Cosmology: Milky Way Formation in a Month?
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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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Graduate The Mechanism of the Cosmological Redshift
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Graduate History and geometry of flat universe
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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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Graduate What are the preliminary results from the Planck First Light Survey?
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Undergrad How Does Gravitational Force Influence Ocean Tides?
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Graduate Offshoot from 'Theoretically how far can one see in the universe'
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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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Graduate Can math truly describe our universe and it's phsical being?
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Undergrad How do we determinate the mass of stars
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Graduate Chaotic Eternal Inflation vs. False Vacuum Eternal Inflation
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High School What exactly does radio luminosity mean?
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Undergrad What is the most massive galaxy cluster in the universe?
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Undergrad Is or can gravitational force become cumulative?
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Graduate More Hawking radiation misinformation
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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 Is the Idea of the Big Bang as the Beginning of the Universe Outdated?
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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 String theory and gravitational waves imprint on microwave background
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Graduate How does cosmic microwave radiation lose energy?
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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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Graduate A challenge to the symmetry of laws of physics
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Graduate In currently understood physics, does the universe have a centre?
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High School Did You See the Mason Dixon Meteor Streak Across Maryland and Pennsylvania?
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Undergrad A little thought of before the Big Bang
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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 Question about distant galaxies
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Undergrad Japan building space-based power plant
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Graduate Expansion around gravitational clusters
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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 CMB fluctuations and large scale fluctuations nowadays do not match ?
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Graduate The limit of Ultramassive Black Holes.
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Undergrad Can Black Holes Be Used for Space Travel and How Do They Compare to Wormholes?
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High School Galaxies that can be seen with the naked eye
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Undergrad Dark Matter: What Is It & How Was It Formed?
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Undergrad If a comet kicks the moon out of its orbit and away from earth
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Advanced Astronomy/Cosmology Forum - Get Answers to Your Questions
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Undergrad The Pioneer Anomaly: Examining Velocity Gained through Gravity Assist Manoeuvres
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Graduate Intuitive explanation of the gravity of a sphere
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Graduate Angle of the Sun above orbit plane on satellite-centered celestial sphere
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Magnetic Field of the Sun will Flip
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Graduate Do black holes repel the weak force?
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Graduate Is there any updated study on the Moon's orbital plane anomaly?
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Graduate Can galaxy clusters rotate like individual galaxies?
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Graduate Mass of BH & Host Galaxy: A Deeper Look
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Graduate How empty are the voids in the universe?
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Graduate The Flyby Anomaly: Ranging Data, Transverse Doppler Effect
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Graduate Least massive earth like planet possible in the habitable zone?
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High School About how far are we now from where we were one year ago?
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Graduate What Are the Inclinations of Planetary Orbits Relative to the Sun's Equator?
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Graduate Absolute velocity, CMB, and doppler shift
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Graduate Life, the universe and everything
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Graduate Capturing an asteroid in Earth orbit
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High School Are All the Stars We See Actually Dead?
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High School View 65 Million Years of Time - Time-Travel Viewer
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