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 Redshifts & Hubble: How Do We Know Galaxies are Moving?
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Undergrad Does gravity affect time on different celestial objects
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Undergrad Gravitational Lensing vs Gravitational Microlensing
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Undergrad Distance modulus and redshift Ia supernovae Catalog
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Undergrad If the universe is infinite, then the big bang theory can't be correct
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Undergrad Question Regarding the Orbit of Comets
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Undergrad Did the Chelyabinsk meteor really explode ?
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Undergrad Can this planet have an ocean of water?
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Undergrad Satellite with period equal to that of its planet?
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Undergrad Kepler mission announces possibly habitable planets found (18 April)
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Undergrad Will PhoneSat revolutionize satellite technology?
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Undergrad Equation of Gravity's influence relative to objects
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Undergrad What Are Quasars & How Do They Work?
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Undergrad How Does Spinning a Ship in Space Create Artificial Gravity?
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Undergrad Tidal bulge on the moon, and its facing etc
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Undergrad Origin of the Moon and it's Retreat
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Undergrad Why is Far-UV spectrum unobservable
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Undergrad Directing dangerous objects to Sun
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Undergrad Can Asteroid Mining Technology Serve as a Global Defense System?
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Undergrad Observing stuff in space over various distances
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Undergrad Is Staring at a Red Dwarf Harmful?
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Undergrad Characteristics of electromagnetic waves traveling through the cosmos.
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Undergrad The acceleration of the expansion of the known universe
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Undergrad Size of VY Canismajoris and gravity
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Undergrad Are there any large star databases containing mass and density?
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Undergrad What Is Space in Physics?
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Undergrad The time it takes the Earth to go around the Sun.
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Undergrad Why are Cosmic Rays and Hard X-rays Essential for Heating Molecular Clouds?
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Undergrad Life in Universe: Is Intelligent Life Inevitable?
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Undergrad Can anything truly be stationary in our constantly moving universe?
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Undergrad What Are the Fastest Moving Objects in the Universe?
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Undergrad Best tables for data of objects in our solar system?
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Undergrad Mystery of the Pushed Away Black Hole
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Undergrad Exploring the Habitable Zone: Limits and Possibilities for Detecting Alien Life
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Undergrad Time Space Matter Characteristics
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Undergrad Can Planetary Gravity Flatten an Egg-Shaped Planet?
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Undergrad Near earth Asteroids and a space elevator
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Undergrad What Form Does Matter Take When a Star 'Explodes'?
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Undergrad See far away objects in space in real time?
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Undergrad Is the Moon's Orbit Influenced by Earth's Warped Space and Tidal Friction?
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Undergrad Calculate the equatorial rotation velocity
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Undergrad Kepler's 3rd law - which object in numerator?
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Undergrad Do planets wave in their orbits?
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Undergrad Astronomy paper help - professor doesn't understand my wording
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Undergrad Looking for a good analogy of the shape of the expanding universe
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Undergrad C/2013 A1: Weight Estimation & Final Trajectory
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Undergrad Why are MACHOs in the Halo not the disk
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Undergrad When did nuclear fusion in the sun really start ?
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Undergrad Help Solve Supernova Assignment | Astro Community
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Undergrad Which Celestial Body in the Solar System Allows a Probe to Orbit Fastest?
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Undergrad Discovering Exoplanets: The Benefits of Studying White Dwarfs
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Undergrad Why does air rush in from colder to hotter space and not vice versa?
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Undergrad Earth as Moon of Gas Giant: Effects on Sunlight?
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Undergrad Creating a Equation to Destroy the Sun
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Undergrad Chelyabinsk Meteor Shockwave 2/15/2013
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Undergrad Why did the Chelyabinsk Meteor Explode?
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Undergrad Star collapse to form directly a black hole
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Undergrad Does Jupiters moon Io exhibit plate tectonics?
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Undergrad Another perspective of the Drake Equation
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Undergrad Pulsars - Rotating neutron star produces EM radiation?
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Undergrad Possibilities of Gravitational Pull in Space Travel
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Undergrad Changes to day length at solstices vs. equinoxes
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Undergrad The Effects of Dumping Nuclear Waste into the Sun
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Undergrad Old space information, relevant conclusions?
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Undergrad The future of Radio Astronomy (your thoughts)
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Undergrad Conjuction of planets to Earth, it affects our weight?
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Undergrad A rudementary question on dark matter
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Undergrad Light Years: Subjectivity and Distance Measurement
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Undergrad Could an ion engine attached to a satellite be used to stabilize orbit?
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Undergrad Space Elevators -> US Transportation Infrastructure
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Undergrad What would a toroidal planet be like?
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Undergrad Why there is so little carbon in Earth crust?
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Undergrad What Causes Elliptical Galaxies to be Elliptical?
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Undergrad Gravity & Shapes: Ellipse, Parabola, Hyperbola?
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Undergrad Can you reach absolute zero in complete empty space
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Undergrad Importance of a standard candle?
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Undergrad Measuring the distance to stars using parallax
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Undergrad Quick question about negative declinations
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Undergrad Maintaining orbit around the moon
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Undergrad No Earth, No Gravity: What Would it Be?
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Undergrad How can knowing parallax of a farther object help with finding a nearer object?
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Undergrad Milkyway Black-hole vs Andromeda Collision
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Undergrad Did Astronauts Face Dangerous Radiation During Apollo Missions?
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Undergrad Is KOI 172.02 the Most Earth-Like Exoplanet Discovered?
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Undergrad What is the Solar Constant in the Kuiper Belt?
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Undergrad What is the Role of Earth's Axis in Copernican Astronomy?
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Undergrad Exoplanet Maps: Northern and Southern Hemisphere Locations
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Undergrad How does Angular Momentum relate to the rapid rotation of Pulsars?
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Undergrad Stars heat up when they lose energy
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Undergrad How Does Gravitational Lensing Bend Light in Space?
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Undergrad Black Holes: Mass, Schwarzschild Radius & Size
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Undergrad Is it possible at all to go faster in an orbit around the earth?
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Undergrad Calculate Mass of Moon from Earth & Diameter
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Undergrad Which mathematical formulas are used in the search for extraterrestrial planets?
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Undergrad Launching an object into OUTER space
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Undergrad How will the pattern of stars in the milky way change over time?
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Undergrad So the question is:Do all galaxies contain super massive black holes?
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Undergrad Elemental Abundance in Stars - The Curve of Growth
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Undergrad Ebb and Flow Effects: Impacts on Moon & Earth?
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Undergrad Can Excel accurately calculate planet positions in real-time?
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