Astronomy, Astrophysics, Cosmology Forum

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Join in expert discussion on the topics of Astronomy, astrophysics and cosmology. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Graduate Puzzled by new confirmation of dark energy
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Undergrad The mesure of distances using the redshift
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Graduate What Could Have Possibly Triggered the Big Bang?
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Undergrad Relationship between mass and surface temperature of a star
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Graduate What is Dark Energy? New Discoveries and Implications
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Graduate Why Do Some Stars Grow So Massive?
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Undergrad How Powerful Is a Supernova in Megatons?
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Undergrad Nebular Theory: Understanding Flattening Process
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High School When did humanity realize that the Sun is just another star?
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Graduate Are there undiscovered sister stars in our solar system?
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Graduate Have i made it right to determine this amounts regarding this question
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Undergrad Estimating the radius of planets
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Undergrad The Mystery of Jupiter's Gravity: How Can it Eject Asteroids?
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Graduate Is Dark Energy Propelling the Accelerating Expansion of the Universe?
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Undergrad Planets with No Orbit: Fascinating News
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Undergrad Server to query for sun/planets elevation at a given datetime?
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Graduate Dark Matter Distribution in the Milky Way
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High School Imaginary Time: Explained for High School Students
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Undergrad Find Direction Between 2 Points: A & B
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Graduate Question about detailed specifics of inflation
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Undergrad How Does Time Connect to Space in Our Universe?
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What is the Best Book for Learning About Astronomy?
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Undergrad Could Rogue Planets be an Alternative to Dark Matter?
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Graduate How Does Gravitational Time Dilation Work?
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Graduate Alright so here is another thing I do not fully
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Graduate News Article + Paper on Dark Energy
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Graduate Understanding curvature and dimensions
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Undergrad Outer planets always gas planets?
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Graduate What happens to time inside a black hole?
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Graduate Expansion of the Universe: Distinguishing No.1 & No.2
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Mysterious Red Shape on Google Earth
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Undergrad What is an equal-sun-elevation day called?
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Graduate Einstein's Gravity: Challenging the Traditional Concept of Forces
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Graduate What are quantum fluctuations and how could they have led to human life?
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Graduate Understanding the Accelerating Expansion of the Universe
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Graduate Wormhole Physics: Can a Single Wormhole Have Multiple Mouths?
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Graduate Can We Travel at Light Speed and Return to Earth?
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Graduate Antimatter: Physical Differences, Attraction & Behaviour
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What is next for the US space program?
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Undergrad What is the difference between the left and right pictures of a Quasar Core?
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High School Has a Star Collision Ever Been Observed in Our Universe?
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Graduate Why do galaxies drift apart in the expanding universe?
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Graduate Are Black Holes sufficiently characterized?
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Graduate How do I develop physical intuition for the tidal force?
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Graduate Is There a Maximum Rotational Velocity for Pulsars?
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Graduate What are the informations deducible from hubble diagram of supernova 1a?
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Graduate What is the True Nature of Space and Time?
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Graduate Big Crunch. What happens at the moment the universe changes direction?
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Undergrad Asteroid Impact Crater Size: Function of Diameter
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Graduate What existed before the bigbang?
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Graduate Information about stars indeterminate?
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Undergrad How Did Ancient Civilizations Accurately Predict Astronomical Events?
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Void Theory vs. Acceleration: Expert Commentary and Refutations
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Graduate How Can Quasar Beams Emerge from Black Holes Despite the Event Horizon?
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Undergrad Measuring time in the 17th century.
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Undergrad What's the opposite of a blackhole?
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Graduate Dark matter exerting a gravitational effect on earth?
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Undergrad Calculating the size of planets from length of days.
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Graduate Is the Expanding Universe Slowing Down According to Age?
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Undergrad Is Faster-Than-Light Space Travel Possible with New Technology?
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Graduate What Came Before the Big Bang? Exploring Pre-Universe Matter and Energy
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Graduate Draw Confidence Contours to Hubble's 1929 Data
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Undergrad Are Asteroids Outside Our Solar System and the Moon Affected by Impact Tsunamis?
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Graduate Light approaching the event horizon
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High School Do Galaxies Move? Rotation Around Something?
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Graduate A Closed Universe and the Horizon Problem
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Undergrad What are the consequences of pole reversals on Earth
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Graduate Satellite's Tidal Force & Orientation: Can It Affect Interlock?
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Undergrad Do we see the universe the way it is?
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Undergrad Gravity Revisited: Earth-Moon & Earth-Sun Comparisons
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Graduate Baby Universes? - Leonard Susskind's Hyperspace Theory
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Graduate Does This Cosmological Model Re-Collapse?
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High School Expansion of the Universe and Time
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Undergrad What methods are used to CONFIRM the compisition of a star from spectral lines?
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Undergrad Why the plane of the rings is vertical to the rotation axis of Saturn?
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Undergrad Photon Questions: Atom-Atom Travel & Purpose
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Graduate Understanding Time in Physics: Questioning the Effects of Gravity on Black Holes
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Graduate Can a collapsing star only form a black hole if it has a companion?
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Graduate Thinking Outside of Space: Big Bang Theory and Beyond
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Graduate What Happens When You Increase an Extremal Black Hole's Charge?
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High School If we have two parallel plane in the space in addition to another two
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Undergrad Physics of a satellite orbiting the sun
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Undergrad Elliptic orbit of earth round the sun
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Graduate So, what is the function for the redshift z as a function of distance r?
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Graduate Need VERY recent paper in observational astronomy for journal club presentation
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Graduate Black holes and Event Horizon: Q's ?
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Graduate Was the Big Bang a Low Entropy State in the Universe?
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Graduate Understanding the Effects of Dark Matter on Galaxies: Myths vs. Facts
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Watch Family Guy: The Big Bang Theory
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High School Planets in Deep Space: Can They Escape Orbit?
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Graduate What Happens at a Black Hole Singularity?
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Stargazing What type of binoculars are best for stargazing in a light-polluted area?
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Graduate Can the universe evolve while in superposition?
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Graduate Origin of Electrons: Big Bang & Annihilation
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Graduate What Would You See at the Threshold of the Expanding Universe?
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High School Do Stars Flicker Colour & Intensity in the Night Sky?
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Graduate Expansion of the Universe question
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Graduate Molecular Cloud Clumping Question
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Graduate Could Black Holes Be Collapsed Dimensions Rather Than Massive Gravity Events?
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Undergrad [QUESTION]Dark energy could it be an explosion?
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