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.
High School Is cosmopsychism theory just babble copied from The Force?
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High School Scattering of light in a strange fashion
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Undergrad Mass in the early universe and the CCC model
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Undergrad Detecting Protostars: Light Processing Explained
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High School Light spectrum of planet Earth as seen from space
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Undergrad Extragalactic Planets Observed Using Microlensing
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High School The Universe vs Observable Universe
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Undergrad Orbit simulations, tidal forces and planetary oblateness
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Undergrad What Are the Best Academic Journals for Aspiring Planetary Scientists?
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High School Is blue shift as common as red shift?
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High School If the moon were a light bulb how many watts would it be.
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High School The Moon's inclination to Earth's equator
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High School Tonight's full moon and lunar eclipse
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High School How Can Astronomy Even Occur? (Oort Cloud)
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Graduate Can a 3d holographic universe exist in 3d?
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High School MPEG movie: traveling to a black hole or a neutron star
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High School Can Star Wars-like asteroid storms exist?
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High School Temperature of a black hole....observed from the singularity
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High School Why does Tc & Teff Differ for Different Types of Stars?
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Undergrad Question regarding Evaporation of galaxies
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Undergrad Star Gravitational Binding Energy Questions
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High School Why Do We Use Different Pairs of Filters to Determine the Temperature of Stars?
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High School Are black holes infinitely dense?
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High School Temperature based on colour index using Planck's law
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Undergrad Is it possible to stretch a singularity?
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High School Is the starshade going to be positioned in a fixed location?
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Undergrad Type Ia supernova involving binary white dwarfs?
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Graduate Could Dark Matter be H or He? They are pervasive
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Graduate Primordial black holes need to be collisionless....
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High School Unusual object on video - any explanation?
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Graduate Are our equations for this universe valid in all universes?
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Undergrad Some confusion about Kepler’s formula
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Undergrad Deriving the Cosmological Constant
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High School Wonder-inducing ring galaxy image
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High School I'm a rookie and I have a question about spacetime
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High School Additional Maths: Essential for Astronomy?
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High School Why is there something rather than nothing?
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Undergrad I use an Olll filter to view emission nebula -- how do they work?
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Undergrad Topology of the Universe and infinities
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Undergrad Could it have been the Big Leak and not the Big Bang?
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Undergrad Moon vs Earth for launch to Mars
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Should We Develop a Unique Terminology for Alien Lifeforms?
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High School Gravastar vs. Neutron Stars: A New Theory for Black Hole Formation?
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Graduate Trouble visualizing and understanding the celestial sphere
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Undergrad Balmer Series Lines: How Do Hot Stars Contain Hydrogen?
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Undergrad If the universe is truly infinite in size....
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Graduate How can the universe keep on expanding if it's infinite?
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Stargazing Is the INTEY Ultra-Clear Telescope a Good Choice for Beginner Astronomers?
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Undergrad How do CTCs allow a universe to self-create?
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High School What is the highest redshift (Z number) a galaxy can have?
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Undergrad Were all these exoplanets a surprise?
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Graduate Could vacuum decay fundamentally change our universe?
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High School Is 'Oumuamua an Alien Spaceship or Just a Cosmic Coincidence?
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High School How did Jupiter and Saturn disrupt our solar system
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High School Can we identify the centre of the Universe?
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Undergrad Can anyone tell me if 2009 MS9 is prograde or retrograde?
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Undergrad Origin of supermassive blackholes in the very early universe
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Undergrad Are Stars Absorbing and Re-Emitting Radiation from Space?
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Undergrad Detecting Asteroid Collisions: 'Oumuamua & Radio Telescopes
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Undergrad Is Tabby's Star a Binary System or an Alien Megastructure?
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High School New Topographic Map of Saturn's Moon Titan Reveals Liquid Flows
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Graduate Does the event horizon define the true surface of a black hole?
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Insights Coordinate Dependent Statements in an Expanding Universe - Comments
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High School What is the true width of the Milky Way galaxy?
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Undergrad Update on liquid water on Mars - maybe it is sand?
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High School What was matter like during the GUT and Electroweak Epochs?
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Undergrad Exploring Different Models of the Universe
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High School History of RA [why is the vernal equinox used?]
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Undergrad Is Expansion of Space Affecting Gravitational and Nuclear Forces?
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Undergrad Cosmological Redshift: Distinguishing From Doppler Effect
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Stargazing The League of Extraordinarily BIG Telescopes
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High School Is a Black Hole Really Waterproof?
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Graduate The unsolved engineering of the "Space Ladder"
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Undergrad How Does Einstein's Curvature of Space Affect Celestial Orbits?
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High School From where is the universe expanding?
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Undergrad What Values Can Ωk Take in the Equation Ωm+Ωr+Ωk=1?
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Undergrad Calculating signal to noise ratio for deimos data
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Undergrad JPL Ephemeris Files: Calculating Heliocentric Pos. of Mars
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Stargazing Astounding Moon Astro Photos: Capturing the Beauty of Our Celestial Neighbor
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Undergrad Calculating Energy to Remove Space Debris from Earth Orbit
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Undergrad Observable Universe Tempature and CMB
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Undergrad What Does Redshift and Scale Factor Tell Us About the Size of the Universe?
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Undergrad What's the effect of solar pole reversal on the Parker Spiral?
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Undergrad Is Gravitation Responsible for the Stability of the Universe?
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High School Distance between the Earth and The Moon
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Insights What Insights Does the Friedmann Equation Offer About Our Universe?
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High School Are Black Holes Actually Giant Neutron Stars Cloaked in an Event Horizon?
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Undergrad Star spectra and star color relation
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High School What's the deal with dark matter
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High School Can the Solar System's Chaos Lead to Earth's Sudden Demise?
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Graduate Entropy and derivations - is my logic faulty?
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Undergrad New Kepler results (8th planet around Kepler-90)
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Undergrad Low mass limit of a neutron star
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Undergrad Friedmann Equation - Positive Curvature
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Insights A Poor Man's CMB Primer. Part 5: Quantum Seeds - Comments
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High School Why does the multiverse theory have only 4 levels?
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High School Does the multiverse really include ALL outcomes?
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Stargazing Programable telescope that will point to any spot on Earth?
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Graduate Does zero exist in the energy term?
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Graduate Equation of State w=1: Why Not Considered in Cosmology?
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