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 The life cycle of a star and the bell shaped energy emission curve
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High School Black hole movement with no time......?
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Undergrad Velocity correction´ formula for the rotation of the Earth
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Undergrad Solar wind velocity and corrections
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Undergrad Who was the first to find an initial singularity in GR models of the universe?
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Undergrad A Puzzle Regarding the Time Between Consecutive March Equinoxes
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Insights The Evolution of the Universe, Cosmic Web and Connections
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Undergrad Can Dark Matter Exist in Higher Dimensions?
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Insights Black Holes Are Not Empty Voids
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Undergrad Uncovering the Truth: Jupiter's Core Revealed as Solid Diamond by Tammy Ma
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High School Understanding the Age of Observed Light: A Scientific Perspective
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Insights Gaia and the Race to Detect More Gravitational Waves
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Undergrad What Does a Negative Value for the Deceleration Parameter Imply in Cosmology?
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High School Is it possible to see the history of space if it expands faster than light?
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Undergrad Understanding inflationary cosmology
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High School How much in the past do we see these planets?
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Undergrad Is My Basic Understanding of Universe Expansion Correct?
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Undergrad Understanding the property of the Comoving Coordinate
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Undergrad Comoving Reference Frame in Cosmology
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Graduate New MOND Simulation: First Galaxy Formation Model in Milgromian Gravity
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Undergrad Universal interferometric signatures of a black hole’s photon ring
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Undergrad Is the Brans-Dicke Vacuum Cosmology Theory Still Relevant?
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High School Can Elon Musk's BFR Project Meet Its Ambitious Timeline for Mars Colonization?
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Undergrad Where exactly is the Hertzsprung Gap?
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High School Conjunction Mars, Jupiter, Saturn, Moon - March 18 + or -
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High School What Does it Mean When We Say the Universe is 'Flat'?
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Undergrad Variations in Sun-Earth distance with a 2000-year cycle?
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Undergrad Uncovering the Mystery of Lunar Perigee Frequency | 2020 Insights
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Undergrad If humamoids lived around a flare red dwarf, would the flare kill them?
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Undergrad Coordinate dependence of recession velocities
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High School Possibility of Another Big Bang?
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Undergrad A new space rock to my collection
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High School High school Astrophysics Research Project Suggestions Please
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Undergrad This Wikipedia article about Scholz's Star doesn't make sense
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Undergrad How Can the Newtonian Spherical Ball Be in Stable Equilibrium?
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Stargazing Satellite grids around other planets
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Graduate Elliptical orbit and how seasons would be affected
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Undergrad Is Big G and Dark Energy Constant Over Time?
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Stargazing Is there an official name yet for tau Ceti 'f'?
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Undergrad How do physicists know that an external world exists?
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Undergrad Asteroid Response Help: Get Answers to Your Questions Here
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Graduate Inflation and measurement of cosmic bodies
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Stargazing So If Something Happened In Space, Say 350 Million Years Ago....
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Undergrad What is the current understanding of supernova mechanisms in 2020?
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Undergrad Why does the Universe have so many galaxies?
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Stargazing Convert Light Years to Miles: 5.879e+12 Explanation and Conversion Guide
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High School Tau neutrino flux in IceCube data
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Undergrad Tidal forces acting on planet NGTS-10b
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Undergrad Does the expansion of the Universe heat stars and bodies?
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Undergrad Astronomers detect biggest explosion in the history of the Universe
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Undergrad Ptolemaic Model of the Solar System
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Undergrad In the beginning there was.... a black hole?
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High School If space is transparent how can we not view light from a black hole
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High School How to calculate the energy released?
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High School Why are there 4 dots in Einstein rings?
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Stargazing M - M as the distance modulus, and a question about the distance ladder
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High School Dark matter that doesn't gravitate?
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High School How Does Modern Particle Accelerator Energy Density Compare to the Big Bang?
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High School I don't understand the evidence or possibility of the Big Bang
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Stargazing How much brighter is the Sun when viewed from space?
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Undergrad Is There really a Hubble Tension?
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Stargazing Is a star's size changed due to gravitational deflection (lensing)?
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High School Why / How do we feel heat from the sun
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Undergrad Understanding the Age of the Universe
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Undergrad Is there a distinction between angular resolution and angular discrimination?
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Undergrad LIGO+Virgo saw something unknown
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High School Why Is There No New Data from LIGO/VIRGO?
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High School Are Early Galaxies Indicating a Future Dead Universe?
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High School Learning to use a Solar Scope with an H alpha filter
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High School The highest resolution image of the Sun’s surface ever taken
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Undergrad Finite density at the BB preinflation epoch implies a finite universe?
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Undergrad Is there an experimental proof that an Earth/Moon barycenter exists?
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Undergrad Earth-centered frame with Earth-Sun line fixed
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Undergrad Is the Pressure Inside a Black Hole So Intense That Atoms Cannot Hold Form?
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High School Other lines of evidence for Dark Energy? (Besides supernova data)
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Graduate Can there be a lawless universe (according to Hawking)?
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Undergrad Questions about the expansion of space on galactic scales
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Undergrad Viewing Planets or stars from a high altitude
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Undergrad Cosmology in Crisis Podcast by LSST Scientists
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High School Why does Jupiter have a stronger gravitational pull than Earth?
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Undergrad DDO 68: A Young Galaxy Supporting the Steady State Theory
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Undergrad The solar system and the Coriolis effect
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Undergrad Does the expanding Universe follow Lorentz contraction?
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Undergrad Dark Energy as repulsive gravity
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Undergrad How to calculate the wavelength of light coming from 1 light year away
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High School Could Earth's Atmosphere Survive a Close Gamma Ray Burst?
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High School Why The Big Bang banged and didn’t collapsed into a black hole?
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Undergrad Is Dark Matter's Gravitational Force Weaker Than Visible Matter's?
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Undergrad Are there upper and lower limits to the inverse square law?
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Undergrad Finding the Sun's Angle from Longitude, Latitude & Time/Date
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High School Is Dark Energy a Continuous Creation Theory?
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Undergrad Transformation matrix for an expanding space
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Undergrad What is power suppression in CMB experiments?
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Undergrad How Are Heavy Elements Distributed?
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Graduate Definition of the IAU for the ecliptic plane
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High School Colliding Neutron Stars Collapse into Black Holes
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Undergrad How do you calculate the cool-down rate of the Universe?
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The first British woman to space is a <can't say>
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Undergrad Some new evidence that the Dark Energy Concept is wrong
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High School Can We Generate Detectable Gravitational Waves in a Lab?
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