Astronomy and Astrophysics Forum

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Join in expert discussion on the topics of Astronomy and astrophysics. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Undergrad Will NASA Reveal Oxygen in TRAPPIST-1 Exoplanet Atmospheres?
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Graduate Calculating the Altitude of a Nominal Burst
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Undergrad Can Dark Energy Cause Deviations in Extremely Large Black Holes?
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High School How do we measure the Spectral Energy Distribution of quasars?
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High School Conflicting thought on quasars and black holes
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Stargazing Where to buy telescope that measures spectrum?
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Stargazing How do you make polar alignment easier for stargazing photography?
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Undergrad How bright will Musk's Tesla car be in the sky?
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High School Maximum weight of a Neutron star
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Graduate Galaxy mass distribution without DM
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Graduate Virial thereom as applied to clusters of galaxies
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Undergrad What it takes to start a space exploration company?
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Stargazing Solar Eclipse on Feb 15, 2018 | Time and Date
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Undergrad Changing the ISS's orbital inclination to match the Moon
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Undergrad Optimizing Lunar Power: North vs. South Poles for Mining and Moonbase Sites
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Undergrad What is the New White Dwarf Mass Limit?
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High School Could we launch spaceships from a long horizontal ramp?
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High School Why are aurora always in the vicinity of Earth's poles?
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High School Adding a huge electric charge to a black hole?
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High School Scattering of light in a strange fashion
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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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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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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 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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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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High School Unusual object on video - any explanation?
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Undergrad Some confusion about Kepler’s formula
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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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Undergrad I use an Olll filter to view emission nebula -- how do they work?
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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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Stargazing Is the INTEY Ultra-Clear Telescope a Good Choice for Beginner Astronomers?
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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 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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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 History of RA [why is the vernal equinox used?]
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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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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 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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High School Distance between the Earth and The Moon
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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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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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Stargazing Programable telescope that will point to any spot on Earth?
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Undergrad Are there galaxies with 2 cores?
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Stargazing Is it nebulosity or an artefact?
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High School How do astronomers find the "parallax angle" of a star?
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Stargazing For those aurora chasers -- a heads up
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Graduate Working with Keplerian Elements & Deriving Vernal Equinox
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Undergrad Transit Photometry: Questions about Detecting Exoplanets
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High School Unitarity and Entanglement: Examining the Fate of Information in Black Holes
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Undergrad How long would it take for gas to leak out of a space box?
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Graduate How to calculate ambient temperature in space or in orbit?
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Undergrad Quasar Number Densities and Lifetimes
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High School Optical eyepieces for star observations
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Undergrad Why Hasn't Mars Ice Core Samples Research Been Attempted?
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Undergrad Why is neutron star interesting to physics ?
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Undergrad What happens if two black holes collide
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Undergrad Why is the time of formation of this Black Hole in question?
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Undergrad Fly-by anomaly is back with Juno
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