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.
Stargazing Understanding Kidney Beaning in Wide Field Eyepieces
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I Where to find in-depth info about each star's composition?
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I How do we know we are looking back in time in space?
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A What Causes a Shift in Cosmic Ray Distribution on Earth?
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B Super-Earth Found in Habitable Zone of Nearby Red Dwarf
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Why colonize Mars and not the Moon?
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I Can negative pions replace electrons in atoms?
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Why use Earth as a gravity assist?
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B Does Negative Mass Play a Role in Hawking Radiation?
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B Why did Aristotle arrange the planets in this order?
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B Celestial Mechanics: Eccentricity of Orbits
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I Questions about the lifecycle of stars
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I Are White Dwarfs Stars? Understanding the Classification and Characteristics
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Stargazing When and where is the best time to view the 2014jo25 asteroid?
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A Micrometeorites and Karman effect
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B Where have we looked, or are looking, for life?
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A Spectral Classification Syntax for Binaries
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I What causes retrograde rotation in planets and moons?
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I Is a superflare capable of changing a planets orbit?
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I Can we predict the Sun's path accurately?
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B An exercise related to the mass of the Milky Way, sort of.
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Stargazing Considerations for size of telescope survey
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I Question about a magnetic dynamo on tidally locked moons
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I Defending the Earth from meteors using lasers
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I Zero G Health Risk: Effects & Readjusting to Earth's Gravity
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Insights Q&A With Universe Today's Fraser Cain - Comments
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B Does the Big Bang Expansion Include All Objects in the Universe?
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B Finding Black Holes: Possible or Not?
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I Observation of photons from CMB by different observers
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How do black holes attract light?
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I Where on the Moon should the first Moonbase be?
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B Is Jupiter's Great Red Spot Hiding a Massive Volcano?
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A What is the formula for calculating the Ascendant?
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B Black hole mass and sigma (velocity dispersion)
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B The Best Spot to Set Up a Colony on Mars
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I Explain the orbital physics of the JAXA Tether experiment?
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I Would the rogue planet in this picture slow Earths spin?
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A Space Radio Software: Get Help from Experts Now!
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I Length of lunar month immediately after moon's formation?
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I Can a planet have multiple large moons?
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B If the universe is expanding at an accelerating rate....
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B How do we know the stars are not our own light falling back.
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A How is the Trappist 1 system stable?
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A Orbit Estimation: Range & Doppler Measurements for Position & Velocity
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I Mass and temperature relation in stars
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A Is the matter-antimatter annihilation observable in priciple
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Cosmological Redshift distance to where it begins?
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I How Can I Improve My 2D Newtonian Gravity Simulator?
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I Uncovering the Hidden Lepton Number of the Universe
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I Clusters at center and periphery
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I What causes the deceleration of a satellite? Space dust?
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B Is There an Arctic Circle on the Moon?
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B How fast is Earth traveling due to the Hubble constant?
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I Will interstellar travel become more possible in future
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I On the Moon, could you melt dirt by focussing sunlight?
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I Why are Lagrange points called libration points, and....
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I Big rip - order of distintegration?
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B Could Microbes Really Thrive in the Clouds of Venus?
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B What would happen to the Moon if (at full moon) the Earth disappeared?
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B How do you know the size/maximum area of a gravity field
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B What are the applications of solar sails?
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B Need Martian Regolith/Soil Simulant. JSC Mars-1
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I Have you ever wondered why we can't see the other side of the moon?
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I Do Red Dwarfs Favor Rocky Planets and Host Life?
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I Can we colonize the Kuiper Belt?
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B What are the chances of evolution of organisms in space
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I Guarding Mars' atmosphere with a magnetic shield
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I Effect of planetary layer densities on trajectories of a satellite
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B How can gravity act on a photon?
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I Was There Another Dimension Shaping Time Before Our Known Dimension?
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B Light Travel Time: Seeing the Past?
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B Cosmological Redshift: Where Has the Energy Gone?
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Stargazing What is the Explanation for the SECCHI Image of Object Opening a Shield?
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B What Saturn’s moon, Pan looks like
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I Could FRBs Power Extraterrestrial Light Sails?
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How can neutron stars have magnetospheres?
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A Neutron Star EoS: Find the Equation of State
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I What is a Space-Time Crystal?
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B What is the vacuum at the Karman line?
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B Are black holes perfect spheres?
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A What is stochastic heating of very small grains?
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I Software for Analysis of FITS table/spectra
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I What Causes GRBs: Ampere's Law or Something Else?
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B Dark Matter Stars: Burning Hot and Invisible
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Space Camera Project: Ideas for STEM & Space Exploration
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I Effect of rotational inertia on gravity or visa versa
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B Cepheid variable stars cause of light variance
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B If something stands absolutely still in the space can it time travel?
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B Why Do Hot Stars Like Zeta Puppis Appear Blue Despite Low Wavelengths?
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I Interstellar travel/centrifugal couching
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B What is seen from the farthest star?
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B How can the Universe grow if it is infinite?
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I Find the Age of the Universe when Matter and Radiation densities were equal
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B Generating Plausible Star Systems
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B How can I conceptualise light and the known universe
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Stargazing Trig Parallax: Measurement & Apparent Shift of Nearby Stars
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B Infinite vs Expanding Universe: A Physics Conundrum Explained
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I Is there any international astronomy competitions for adults
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B E=0. What Does That Mean for the Seasons?
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Stargazing Are there astronomy competitions?
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