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 Fine Structure Constant appears to vary across the distant sky
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Graduate Is the Hubble Red-Shift Gravitational Instead of Doppler?
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Graduate Where was the big bang singularity?
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Graduate After Big Bang: What if Anti Mass Had Upperhand?
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Graduate The expanding universe and the conservation of energy
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Graduate Cosmology Questions That Have Perplexed Me Over the Years
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Graduate Fine structure constant probably doesn't vary with direction in space
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Graduate Quick question about the properties of dark matter/energy
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Undergrad See the Light of Creation: Viewing the Big Bang
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High School Why do stars appear to be white in color?
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Graduate Virtual particles and accelerated expansion
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Graduate Accelerated Expansion of Space question
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Undergrad How do distance and age relate in astronomical measurements?
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Graduate Curvature in a Universe with No Cosmological Constant and Zero Density
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Stargazing Is it Possible to Build a Simple Radiotelescope in Your Backyard?
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Undergrad What form of energy is lost when a planet changes orbit?
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Undergrad Universe from Nothing: The Mystery of the Big Bang Explained
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Undergrad Prove Binary System Brighter by 3/4 Magnitude Than Single Star
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Graduate Converting HJD to BJD: Equation and Code Solutions | Natski
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Undergrad Susskind and Hawking on hard determinism
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Graduate Why is the speed of light in a vacuum ~299,793 km/s?
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Undergrad Infinitely Old Earth: Cambridge A Level Physics Student
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Graduate Creation of Matter: Higgs Boson & Other Explanations
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Graduate Evaporating black holes, a kind of flux of space?
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Graduate How Does Hawking Radiation Affect Black Hole Energy Loss?
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Undergrad Distribution of stars in spiral galaxies
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High School What is the maximum mass a planet can reach?
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Richest Planetary System Discovered
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Graduate CBR photon density at equilibrium temperature
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Graduate Explore Black Holes & Time: Is Time Stopping Possible?
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Graduate Hundreds of Rogue Black Holes May Roam Milky Way
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High School My First Iridium Flare - Unexpected Bright Light in the Sky
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Graduate Our Universe then and now, energy verses space.
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Undergrad Telling time with Jupiters moons?
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Graduate Thoughts on Hawking's No-Boundary Proposal of Universe
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Undergrad How Would a Carrington Event Affect Modern Computers?
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Undergrad Looking for data on the orbit of S2 star
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Stargazing Can a Yukon 6-100X100 Spotting Scope View Jupiter's Stripes and Saturn's Rings?
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Graduate Black holes and the accelerating expansion of the Universe
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Graduate HLX-1 brightest ultra-luminous X-ray source known.
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Undergrad Is Voyager 1 Approaching the Oort Cloud?
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Undergrad Gravitational effects of planets on each other
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Graduate Is Entropy the Key to Understanding Time in an Expanding Universe?
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Can Love Transcend Across Parallel Universes?
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Graduate Where did the energy and mass in the singularity come from?
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High School Big Bang: Discovering the Reasons Behind Its Occurrence
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Graduate Gravitational Conditions: Dust Cloud vs Black Hole
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Graduate Calcluating the Hubble Radius for an open universe?
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Graduate What happens to time when spacetime expands
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Graduate Is the Universe in an Eternal Cycle of Expansion and Rebirth?
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Undergrad Quasars - how do they emerge from black holes?
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Undergrad Is Everything in the Universe Made of Wavelengths?
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Graduate Best review paper on the observational status of black holes?
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Find Space Video: Gravityless Environment 5+ Mins
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Graduate Black hole size vs. neutron star size
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Undergrad Where in the sky do meteors come from at any arbitrary point in the year?
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Undergrad What is the connection between Olber's paradox and the age of the universe?
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Graduate What is the Limitation of Interstellar Communication for Humans?
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Graduate Temperature can it alter space time
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Undergrad Amount of iron in the solar system
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Undergrad Why Don't Sunrise and Sunset Times Change Symmetrically?
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Graduate Gravity center; Virtual particles near BH; Motion reality; Universe contracting
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Undergrad Kepler's Third Law orbiting planet
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High School Doppler Effect Proven by Red Light from Distant Galaxies
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Graduate What if the universe is shrinking instead of expanding?
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Graduate Searching for Sister Stars in Our Multistar System with Infrared Telescopes
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Graduate Time as the force carrier of mass
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Graduate Does Mass Have Latency? Investigating Colliding Galaxies
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Stargazing Galilean Telescope: Taking Photos with Digital Camera
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Graduate What Will Happen to Stars in the Distant Future?
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Name of asteroid that'll pass very close
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What gas giant, what moon(s) are split in half and.
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Graduate Cosmological Constant and Conservation of Energy
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Graduate White Holes: Connections to Other Universes?
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Graduate Estimating the Sun's Present-Day Luminosity
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Graduate Lunar gravity assist en route to Mars
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Graduate Bandwidth of Space: Threshold Capacity and Limitations
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Undergrad What is the Hill Sphere and how is its formula derived?
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Undergrad What is the diameter of star clusters?
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Undergrad What Does Flat Universe Mean?
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Undergrad How Fast Is Earth Moving Through Space?
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Graduate Expanding Universe: Cooling Matter, Gravity & Isotropy
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Graduate Is the Planck Density a Hopelessly Outdated View?
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Graduate Beyond brown dwarf mass to sustained fusion
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Graduate Question about accelerated expanding universe theory.
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Graduate Light Speed & Expanding Galaxies: A Cosmological Mystery
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Graduate Discovering Chandra X-ray Field of View & Object Size at 500 pc Distance
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Graduate How can the Universe be flat and isotropic?
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Graduate Why does the Universe have a net charge of zero?
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Graduate Chalnoth case against Loop Quantum Cosmology
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Undergrad What if the gravitational force is
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Graduate Fine Structure Constant Varies With Direction in Space
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Graduate Could Time Symmetry Explain the Arrow of Time?
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Undergrad How do supernovae and hypernovae form and what is the corpse left behind?
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Undergrad Comet SL9 colliding with Jupiter
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High School Why Doesn't Air Get Sucked into Space?
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Graduate Is Our Understanding of the Universe Shaped by Archetypal Concepts?
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Graduate Seeing the Unseen: Visualizing a Rotating Black Hole
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High School Kepler-9 b,c planets discovered
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Undergrad Are We in the Middle of the Universe?
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