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.
Undergrad What is the Role of Space in this Apparatus?
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Undergrad Boltzmann Brains: Existence, Models & Opinion
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Stargazing Nebulosity is a hard program for the aged?
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High School B Calculating the age of the universe with the Hubble constant
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Undergrad Cosmological electroweak phase transition
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High School Black Holes & Time: How Do We Observe Movement?
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Undergrad Galaxy Merger and Damped Oscillation?
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High School What is your favorite planet of the solar system?
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Undergrad Dumb Question: How do we know galaxies are in SSCM?
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High School If Earth moves at 500,000 mph then why don't satellites stay behind?
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Undergrad Has anything in the universe ever reached 0 Kelvin?
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Undergrad Is the fabric of space a "medium" for light?
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Undergrad Is angular momentum conserved in a Supernova?
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Undergrad How to solve for the volume of the universe / redshift
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Undergrad Can 21 cm Emission Be Detected in a Laboratory?
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High School Emergent Gravity and the Dark Universe
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High School Where Has All the Energy Gone? The Mystery of Big Bang and Dark Energy
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High School What is the Relation Between Jeans Mass and Fundamental Mode in Acoustic Waves?
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Graduate Why isn't the pull of gravity neutral on large scales?
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High School Questions about the origin and evolution of dark energy.
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High School How can a physical entity be infinite?
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High School What Do Scientists Think a Black Hole Is?
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High School Is the Universe infinite or not?
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High School Does dark matter make black holes bigger?
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Undergrad Measuring Time w/o Entropy: Can It Be Done?
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High School Are OH molecules in masers ionized?
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High School Is the Universe Infinitely Large Since the Big Bang?
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Undergrad Is Stellarium More Accurate Than VSOP87?
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Undergrad What Does the h Subscript 70 to the Power of 3 Mean in Supernova Units?
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Undergrad How is the first multipole calculated from the Plank Study?
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High School Are asteroids found by the light they reflect?
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Undergrad Why do things fall into a black hole?
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Undergrad Why do planets follow the same curvature at both foci?
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High School Determining the transition frequency
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Undergrad Is It Time to Rethink Our Models of Dark Energy and Dark Matter?
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High School What would happen if 6 black holes surrounded a planet?
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High School Could a black hole be hiding inside a neutron star?
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Undergrad Would quantum laws work in other hypothetical universes?
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High School Theory that challenges Einstein's physics could soon be put to rest
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Graduate Is the Cosmic Microwave Background Linked to Dark Energy?
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Undergrad How do mass and temperature change in black holes due to Hawking Radiation?
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Undergrad Bullet clusters & CMB accoustic peaks dark matter
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High School Answers to Beginner Questions about Black Hole Event Horizons
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Graduate Understanding MASERs and their properties
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High School Can Orbiting Bodies Slow Down Over Time?
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High School Black Holes & Time: A Closer Look
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Undergrad Does Free Space Permeability Change with Applied Magnetic Fields?
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High School Can Hydrogen-Based Plastic Provide Better Radiation Protection than Lead?
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High School Temperature in the space between planets of our solar system?
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High School Spiral Galaxies: Why Do Arms Bifurcate & What's Moving In/Out?
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High School Discussing Juno/JunoCam Mission and Jupiter Data
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High School Earth's Radio Bubble: Alien Civilization Unaware of Human Existence
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High School Dark matter interacts with visible matter via gravity
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High School Is a Black Hole Really Just a Spherical Structure?
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Undergrad Where does a polytropic EoS come from?
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Graduate Did the universe Absolutely begin?
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Undergrad Black Holes: What They Are & What They're Made Of
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Undergrad Black Hole Time Dilation: What Would an Astronaut See?
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High School Infinite amount of matter in the universe?
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High School Cosmic Rays: How Fast Do They Travel?
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High School Is There a Limit to the Expansion of the Universe?
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Undergrad Planet Composition: Detecting Exoplanets via Spectroscopy
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High School Living on Titan: A New World for Humans?
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High School Action and reaction of a rocket in space.
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High School Is the effect of gravity limited by distance?
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Undergrad Terraforming Mars: Possibility or Pipe Dream?
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High School How does black hole merger cause loss of mass?
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Stargazing How Can Both Jets from a Black Hole Appear to Move Faster Than Light?
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High School Are all galaxies moving away from the Milky Way?
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High School What is the true vacuum and does it exist in our expanding universe?
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High School Thickness & Distance of Milky Way at Sun's Location
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High School Are black holes white or monochromatic?
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Graduate Philosophy of a Mathematical Multiverse
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Undergrad How did scientists figure out the expansion is accelerating?
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Undergrad Is the Cosmic Void Between Galaxies Truly Empty?
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High School How can we create a map of the universe?
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High School Height measurement on other planets
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Graduate Density of White Dwarfs: Questions & Answers
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Stargazing Researching AN Ursae Majoris B for Supernova Possibilities
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High School Luminosity and neutrino questions
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Stargazing What Is This Strange Light in the Night Sky?
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High School Can we detect ancient EMR attenuation from before the recombination epoch?
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High School Re-evaluating Dark Matter and Kepler's Law in Spiral Galaxies
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Undergrad How can gravity hold galaxy groups togehter?
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High School Retrograde star orbits in the Milky Way
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Stargazing Where Is the Hubble Telescope in Orbit?
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High School Beyond the standard model through 'mini spirals'
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High School Is Weak Gravitational Lensing Enough Evidence to Confirm Dark Matter?
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Undergrad Nebulosity around Pleiades stars
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High School What is the link between ordinary and dark matter?
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High School Gravity waves and density perturbations
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High School Quantisation of light and Doppler effect
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High School Will Voyager 2 Pass Sirius While Orbiting the Milky Way?
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Undergrad If there is life on Mars should people stay home?
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Stargazing Another supermoon to observe/photo
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High School Weird quantum property of empty space?
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High School Research Ideas For High School Student (Astrophysics/Cosmology)
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Undergrad Inflation and expansion of the universe
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High School Cosmological constant vis-a-vis dynamical vacuum: bold challenging the ΛCDM
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Undergrad Is Dark Matter the Key to Understanding the Cosmos?
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