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.
Lunar super eclipse Sept. 27th. 2015
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Find 1.25" Focuser for 8" Newtonian Telescope
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Need reliable resources on basic astronomy and quantum physics
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What Is the True Speed of Earth in Relation to the Solar System?
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Modified Newtonian Dynamics vs. Quantum Gravity
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Humans Settling on the Moon: What Do You Think?
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Can Neutrinos Escape Black Holes?
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Finding Number of Stars that have Died
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Why don't black holes become stars again?
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The Lords of the Rings among centaurs
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Stargazing Got my First Telescope | Celestron Sky Prodigy 130 | Astrophotography
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Who discovered the cause of a red moon?
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Unraveling the Mystery of the Comet Dust Layer
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How much does weight affect re-entry into the atmosphere?
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Could the Higgs Boson Help Identify Dark Matter?
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Mars panorama from Curiosity shows petrified sand dunes
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How much is popping into and out of
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How do we determine distances of objects in space?
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Russian cosmonaut back after record 879 days in space
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How can I apply probability to the cosmological constant?
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Why Does Earth Appear Mostly Blue from Space?
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Why does Pluto revolve clockwise
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Is Galileo Similar to GPS?
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Sweeping over the south pole of Mars
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Could we throw stuff into space?
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Moon's crust as fractured as can be
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Astronomers find galaxy cluster with bursting heart
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Underground magma ocean could explain Io's 'misplaced' volcanoes
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SETI reborn—the new search for intelligent life
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The Mysteries of Cosmic Ray Data: A Comprehensive Guide
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Who first found the Heliocentric or Geocentric Distances
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Cassini confirms global ocean at Enceladus
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Neutral hydrogen gas in galaxy clusters
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Oxygen is not definitive evidence of life on habitable extrasolar planets
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How Do You Calculate Hydrogen Ionization Using a Metagalactic Radiation Field?
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How Can I Derive the Kepler Equation?
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Is the Milky Way Visible with a New Wide-Angle Lens in Sydney's Night Sky?
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Astronomers discover how lowly dwarf galaxy becomes star-forming powerhouse
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China aims to be first to land probe on moon's far side
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Celeste: A new model for cataloging the universe
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How do I calculate the event horizon?
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Young gas giants fly close to their suns
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Could a Tidal Lock Cause the Earth to Stop Rotating?
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Heory of Spacetime Curvature and Gravity
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Can Neutrinos Prevent Cavities?
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Solar Tornado Captured by NASA's SDO Probe
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What can we learn about the Milky Way using an 85mm lens and static tripod?
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The Age Distribution of Intelligent Life in the Milky Way
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Questions About Contact in the Movie
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Data for Earth Orbiting Satellite & Ionosphere: Research Help
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Clear Space Technologies: Recycling & Repurposing Orbital Space Debris
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A question about the flatness of galaxies
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Novel idea for space travel (launch track around the moon)
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Yay, starting my Astronomy MSc this month
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Apple and Worm: Patching holes in spacetime game
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How Can Empty Space Be Curved?
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Q: Personal magnetic fields: Protection from space radiation
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Can the Universe's Acceleration be Measured in m/s^2 Instead of m/s/pc?
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Help with Aladin Contrast for Galaxies, Stars & Planets
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Simulation of New Horizons arrival day at Pluto
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Elliptical Orbit of Sun Around Milky Way
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A little solar activity this week
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Confusion About the Physics of Orbiting Bodies
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Blackbody Radiation and the Inverse Square Law
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I Can time exist without space and vice versa
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IceCube sees astrophysical neutrinos
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A shot I got of Jupiter & moons last night
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Are We an Early Intelligent Species in the Universe?
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Interaction Between Light and Black Holes
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Traveling to space aging more slowly is true?
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RIP Jacob Bekenstein (Black Hole Entropy)
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How do we know galaxies are exactly where we see them?
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Minimum possible warning for deadly comet/asteroid
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How to convert Ohms to luminosity?
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Stargazing What is the difference between linear and angular magnitude in telescopes?
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Hydrogen/Helium Emission Spectra Temperature Dependence
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Gamma ray bursts (GRB) and distribution of life
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Understanding the Metric Tensor: Definition, Equations, and Properties
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How do we know everything in the universe is matter? (versus antimatter)
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Distances in km/s vs mega parsecs or light years
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Galaxies Colliding: A Rare Phenomenon in Space
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Can we use counter-rotating rings to generate power on space
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Ready to Watch the Perseid Shower? Join Me for a Clear Sky Viewing!
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Does Gravity Cause Heat Flow to the Center of the Earth?
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Earth mimics supernovae with TGFs. No one knows how.
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How Far Can We Exclude Alien EM Broadcasts in Our Light Cone?
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How big is an object in empty space?
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Can a micro black hole be created Past the horizon of a large black hole
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Why isn't the Oort Cloud shaped like a disk?
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Solar day and the amount of Earth's rotation
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How many Hubble Spheres are in the universe?
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Why dark matter distribution is so different in galaxies?
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Questions about black holes and wormholes
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Existence of Universe: How Scientists Determine Galaxy Existence
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Neutron Star Questions: Answers to Max/Min Mass & More
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A Question Regarding Black Holes
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Gravitational Influence of Stars in a Galaxy
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Thermodynamics behind the heating of Saturn's moon Enceladus
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Which field deals with this(Astronomy,Astrophysics) ?
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Do the black holes have infinite mass ?
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