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 Question re: Planets Facing Each Other
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Undergrad How Can You Calculate the Area of Light Hitting a Dome?
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Undergrad Moon's Escape Point: Beyond Earth's Gravity
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Undergrad Water found on distant planet (hot Jupiter at 63 LY)
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Undergrad What is the accepted diameter of the universe?
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Undergrad Black Hole Radius: Facts & Theory
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Undergrad Does the Saros Cycle Provide Accurate Eclipse Predictions Across Time?
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Undergrad Question regarding sun/moon angle
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Undergrad Understanding the Expansion of the Universe Through Low Mass Star Death
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Undergrad What is the impact of the moon's mass on Earth's orbit around the sun?
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Undergrad Julian Days: Guide to Formula & Calculations
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Undergrad Unveiling the Mystery of Light: How Does it Move?
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Undergrad Star Collapse: Why Not in Early Stages?
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Undergrad Calculate Star Radii: Mass, Luminosity & Temp
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Undergrad Can Distance Alone Prove Gravitational Binding?
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Undergrad Publications on the evolution of stars?
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Undergrad What are Some Important Effects or Phenomena in Astrophysics?
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Undergrad Most Distant Black Hole Discovered: 13 Billion Light-Years Away!
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Undergrad A Query on Sun and Moon Coordinate data
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Undergrad What would a black hole look like?
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Undergrad Measuring the Distances to Stars and Galaxies
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Undergrad SKA: What's Being Planned & Job Prospects?
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Undergrad Understanding the Doppler Effect: The Red Shift and Our Place in the Universe
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Undergrad Supernova 7000 ly Away: Impact on Earth and Light Visibility
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Undergrad Learning Physics: How Do Neutron Stars Form?
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Undergrad Is NASA's New Evidence the Most Direct Detection of Dark Matter?
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Undergrad Apparent Magnitude: Meaning & 3 Star System
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Undergrad Gravity and the Rotation of Galaxies
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Undergrad Density of Gliese 581 d: What's the Real Number?
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Undergrad Why Do Comets Have Elliptical Orbits While Planets Are Circular?
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Undergrad Is Pluto's Axis of Rotation Almost Perpendicular to Its Orbit?
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Undergrad Brightest supernova ever observed
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Undergrad Atmospheric Refraction vs Height
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Undergrad Space Travel Possible? Avoiding Collisions & Risks
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Undergrad What was the true significance of Roemer's measurement of the speed of light?
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Undergrad Absolute Magnitudes for Cepheids
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Undergrad How does dark matter clump together?
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Undergrad Can Mars Effect the Asteroid Belt?
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Undergrad Velocity to Keep Object in Orbit Above Moon - Jeffrey
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Undergrad WHY is the sun red during rise and set
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Undergrad What Are the Key Differences Between Astronomy, Astrophysics, and Cosmology?
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Undergrad Earth's rotational speed when its gravity is 5.0m/s2
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Undergrad Radiative Transfer: Learn Physics - Free Reference Guide
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Undergrad Acceleration, velocity, distance, speed and time help please
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Undergrad How Do You Begin Your Journey in Astronomy and Astrophysics?
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Undergrad Is the Moon's Rotation a Coincidence?
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Undergrad Universal Gravitation and orbit
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Undergrad What Are the Key Insights and Fascinating Facts About Cepheid Variable Stars?
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Undergrad What is the vector equation for escape velocity?
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Undergrad Doesn't dust or debris collect at the L4 and L5 Lagrangian points?
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Undergrad Astro simulation program problem - program bugs?
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Undergrad What would happen if I were to near and be consumed by a black hole?
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Undergrad Water on Mars: Separating Fact from Fiction - Textbook Deadline Approaching!
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Undergrad Black holes, the sun and wormholes.
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Undergrad Are craters on the moon randomly distributed?
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Undergrad Does Uranus Have a Distinct Rocky Core?
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Undergrad Are other planets getting hotter like the Earth?
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Undergrad Quick easy questionFormula for angular diameter?
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Undergrad Where Can I Find the Mathematics in Nucleosynthesis?
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Undergrad Astrophysics Starter Guide | Find the Best Textbooks
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Undergrad Eclipsing binary problem im really frustrated
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Undergrad Having trouble with eclipsing binaries.
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Undergrad What Are the Current Unsolved Mysteries in Astrophysics?
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Undergrad How come we can see galaxies 9 B l/y away if universe is only 14 B y/o
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Undergrad Paradox of the Expanding Universe: Debunking the Big Bang Theory
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Undergrad Black Holes in a Newtonian (non-Einsteinian) World
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Undergrad How do we determine what's in the core of stars/planets?
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Undergrad Uranium and supernovae explosions
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Undergrad Are hotter stars always brighter?
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Undergrad How do we really know the universe is expanding?
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Undergrad Experiment with multiple instrument places all over the earth
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Undergrad Calculating Solar Constant at Sunset: How Much Energy Will Be Received?
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Undergrad Does Andromeda contain dark matter?
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Undergrad Space Wars: US Plans for Dominance and Monopolization
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Undergrad Is a Sunshade the Solution for Earth's Drought and Heat?
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Undergrad Mapping 21cm Neutral Hydrogen with Radio Telescope
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Undergrad Searching for Intelligent Life: Understanding Radio Wave Filters
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Undergrad Ratio of Orbital Distance to Transit Time
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Undergrad Why Don't Black Holes Absorb Hawking Radiation?
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Undergrad Unraveling the Mysteries of Jupiter's Auroras
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Undergrad Where should I begin with Astrophysics?
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Undergrad Finding the Exact Time of Alignment of Earth, Sun and Center Sun
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Undergrad What Factors Affect the Color of a Star from Earth?
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Undergrad Can Gravity Explain the Tilt of Mars and Neptune?
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Undergrad Speed of Gravity: Is It As Fast As Light?
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Undergrad Why Symmetry of Tides on Earth (influenced by moon, sun)
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Undergrad Where Can I Find a Comprehensive Database of Supernovae?
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Undergrad Space Exploration and its effect on the Earth's Oxygen supply: I have a question
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Undergrad How does gravity affect rotation?
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Undergrad Random MOND theory / dark matter question(possibly really easy to answer)
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Undergrad How can a star turn into a black hole, with the law of conservation of mass?
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Undergrad Why does Jupiter have more gravity than its density should allow?
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Undergrad Do hypernova events really exist, is there any proof for one existing?
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Undergrad Last edited by a moderator: May 2, 2017
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Undergrad Uncovering the Composition of Space: A Scientific Explanation
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Undergrad Are Black Holes Universal Recycling Bins?
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Undergrad If Saturn floats, then what happens?
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Undergrad Discover the Hubble Ultra Deep Field: Deepest Portrait of the Visible Universe
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Undergrad Galaxy defy Kepler? True or bull?
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Undergrad Is Gravity Like a Bed Sheet and Baseball?
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