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 Is the Universe's Age Finite or Infinite Beyond Our Horizon?
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Graduate Besides the bigbang, are there other published theories about cosmic microwave
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Undergrad Cause of Big Bang: What Started the Expansion?
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Undergrad How does the three-body system (Earth, moon, Sun) work?
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Graduate Latest on black hole infromation paradox?
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High School Are the planets where we belive these to be
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Inner and Outer Spacewhere does it begin, your opinion.
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Graduate LCROSS/LRO and Their Effect on the Moon
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High School Why is the Moon drifting away from Earth?
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High School Is Meade LX200 10 a Good Deal for Your CCD Scope?
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Graduate Neutrino Astronomy: How Much Energy Passes Through Us?
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High School Length of Days: Past vs. Present - Comparing Rotation Speeds
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Undergrad Gravitational Disc consequence ?
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Graduate Can a Collapsing Star Form a Wormhole?
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Graduate Magnatars (Hypothetical Question)
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Undergrad What Is the Longest Wavelength We Can Observe in Radio Astronomy?
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Undergrad How does inflation explain the rapid expansion of the universe?
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High School Do all planets have magnetospheres?
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Graduate Mars Terraforming: Possibilities and Limitations
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Graduate What Happens to Neutron Stars Without Black Holes?
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Graduate Black holes and redshift (2 questions)
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Why No Video Streams of Space Missions?
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High School Unraveling the Mystery of Planetary Motion: Mercury & Pluto
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Graduate Looking for interest in Carrol & Ostlie study group
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Graduate Calculating Critical Density Using FRW and Its Implications
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High School What is the Max Wavelength of CMB Radiation?
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Graduate How Does a Black Hole's Gravity Vary Despite Its Infinite Density?
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Graduate How did the Hydrogen Atoms formed from Energy ?
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Graduate End of Massive Star: Neutron Star or Black Hole?
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High School THE CENTER of The Milky Way Galaxy
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Undergrad Anthropic Principle Interpretations
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Undergrad Why Haven't We Sent a Probe Into Jupiter's Depths?
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Graduate Status of Dark Flow Phenomenon: Kashlinsky's Claim
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Undergrad Universe 93 billion light years?
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Graduate Hawking On The Edge Of The Universe
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Graduate Apparent superluminal velocity in M82 source
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Graduate Could this be an explanation why there is more matter than antimatter?
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Undergrad If Mass can be turned into energy, can enegry be turned to Mass?
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Undergrad Can the Sun be treated as a black body radiator?
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Graduate Size comparison of WASP-12b (gray) with Jupiter.
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Graduate Our universe is a Black Hole in a 10D universe
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Graduate Discontinuity of Spacetime (and other things)
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Graduate Distunguishing matter/antimatter black holes
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Planet Energy: Discover Its Frequency & Production
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Graduate Black hole inside a larger black hole.
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High School Asteroids, Meteorites and Meteors: The Differences Explained
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Graduate Is the Universe Infinite or Finite?
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Graduate How energy divided up in early Universe.
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Undergrad Space Weather reports possibility of Hyder Flare that will hit the earth
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Was the 1969 Moon Landing a Hoax?
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Graduate Are Inflation and the Multiverse Indisputably Linked?
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Undergrad Big Bang Initial Size: Evidence & Technologies?
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Graduate Does the Age of the Universe Need to Factor in Light's Expansion?
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Graduate Collapsed hypergiant forms a gamma ray pulsating black hole
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Graduate Time from the origin of universe
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Undergrad Why do neutron stars suck the gas from their companions?
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Graduate Does Newly Discovered Supernova Point to Unknown Laws of Physics?
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Undergrad Potential for Gamma Ray Bursts to Pose a Threat to Earth?
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Graduate Will the Milky Way and Andromeda Collide Despite the Expanding Universe?
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Graduate Topography of Spacetime over time
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Graduate Can a Black Hole Be Weaponized?
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Re:star crust 10 billon times stronger than steel
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Graduate Unraveling the Mysteries of Spacetime: How Physicists Know
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Graduate What do mainstream cosmologists mean by Infinte universe ?
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Undergrad Finding Distance to Sirius Using Parallax Method
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High School Why Does the Moon & Earth Have Different Relationships with the Sun?
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High School Big Bang Theory: Can It Really Explain the Universe?
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Voyager 2 Hijacked: Fact or Fiction?
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Graduate Age of the universe from a photons point of view
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High School Big Crunch Theory Q: Can We Reach the Edge/End?
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High School Earth's Rotation Speed: Would We Notice?
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Graduate Is the Dark Matter Hypothesis Failing to Explain Galaxy Formation?
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Undergrad Why Don't Stars Expand with Space?
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Graduate Is M-theory Defined by Speculative Events?
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Graduate Is there more to the universe than what we can see?
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Graduate Couple of questions about black holes and event horizons
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High School How much of space has humanity observed?
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Graduate NASA Discoveries: Neutrinos and Cosmic Fog
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High School Space: Endless or Finite? The Surprising Impact on Shape and Structure
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Graduate Is Science Limited in Explaining the Concept of Nothingness in the Universe?
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Undergrad Exploring Habitable Zones: Searching for Life Beyond Earth
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NY Times Article: Mater vs. Anti-Mater
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Undergrad Is Dark Matter a Cop-Out in Cosmology?
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Graduate Quark Degeneracy? String Degeneracy? (and the effect on Black Holes)
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Undergrad Simple description of a Singularity
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Undergrad Question about gravity & the Big Bang
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Graduate Why do we need inflation to explain the homogeneity of CMB?
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Graduate Explosion/expansion isn't there a period of acceleration
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Graduate Could the Mass in the Universe Be Infinite?
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Undergrad Did the big bang create space or time?
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Graduate Why light curves around objects of mass. 3 answers. 3 questions.
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Graduate Are galaxies losing mass or gaining density or both?
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Stargazing Can Telescope Size Indicate Wavelength Range?
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Graduate Here's a question i hope someone can answer
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Graduate Sagitarius A and its Possible Escape from a Black Hole
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Future of human spaceflight (again)
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Undergrad Where Can I Find a Paper on Dark Matter Density Percentages in the Universe?
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Undergrad Understanding Hyperbolic & Parabolic Trajectories
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Graduate Can microscopic wormholes pass through larger wormholes without collapsing?
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Graduate Is there a theory that we are in an eternal loop? Multiverse?
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