Astronomy, Astrophysics, Cosmology Forum

Graduate Space-Time Topology Theory: Learn About Popular Theories

Graduate Is Gravity Geometry or Quantum in Nature?

Undergrad Conversion of healpix fits file to normal fits file

Graduate Stars, Ozone, & Evolution of Complex Life

High School Is it possible to reach absolute zero?

Undergrad Dark Energy Project: Studying the Universe

Undergrad Why Do Stars and Galaxies Keep Spinning?

High School About the Earth's orbital velocity

Graduate Baryon asymmetry and conservation of charge

Graduate What Caused the Asymmetry Between Matter and Antimatter in the Early Universe?

Graduate Solving Extinction and Reddening in Photometric Analysis of M5 Globular Cluster

Graduate How do you derive the tidal force equation?

Graduate Estimating Planetary Cooling Times

Undergrad How to calculate the position of stars

High School Earth's distance from the galactic center?

High School Classification of Stella Spectra

Graduate Understanding Hagedorn Temperature: Can Light Speed Up?

High School Moon's Orbit: Moving Closer or Farther From Earth?

Graduate Proof of three dimensional space

Graduate Our sources of fear/anguish; permitted by the physical universe.

Stargazing Venus and Mars: Did They Ever Cross Paths in a Terrestrial Eclipse?

Graduate Sailing Through Space: The Technical Challenges of Interstellar Travel

Graduate Is the CMBR Truly Uniform?

Undergrad I'm confused about 1st Kepler's law and the 2 body problem

Undergrad "Estimating the Age of a Black Hole"

Stargazing Telescopes & Astronomy Magazines - Scientific American

High School Why doesn't the asteroid belt block our view of the jovial planets?

Undergrad What are the implications of Obama's space policy plan for NASA's future?

Undergrad Explaining Mercury's Precession: Layman Terms

Graduate Where is the energy coming from to push space apart?

Graduate Is 'real space' merely a convenient mental representation?

Undergrad Why is the density of Mercury 40% larger than the density of Mars?

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High School Is the Sun Dying? | Facts & Speculation

Graduate Ways to accommodate modern cosmology

Graduate Have You Considered Dr. Oliver Manuel's Neutron Star Model for the Sun?

High School The most distant object that can still orbit the Earth.

Graduate Existence of a small planet (theoretically)

Graduate What is the average density of a rocky world according to Nilssen's Law?

Undergrad Understanding Gravity Waves: Detected or Theoretical?

Graduate Proto-Earth was ~230 Earth Masses

Graduate Astro- modelling a white dwarf via polytrope

High School Confusion over gravity and tides

Graduate Dark Matter in the solar system.

Graduate What is Nilssen's Law of Stars and how does it relate to star data?

Undergrad Charge of Black Holes: Mass Dependency Explained

Graduate Confusion regarding jargon in journals

Undergrad Why are stars often found far from their birthplace in nebulas?

Graduate Which from scratch? (group survey)

Graduate Is the Net Density of Any Space Interval Ever Zero?

Graduate Olbers' Paradox, the CMB and the observable universe

Graduate Why Dark Matter and Dark Energy?

Undergrad Google calculator impact on basic cosmo explanations

Undergrad Kepler's 3rd law to determine mass of jupiter

Undergrad Why Isn't Space at Absolute Zero Despite Its Vacuum and Low Temperature?

Graduate Unique Roche limit and Saturn's rings

Graduate Age and metallicity of Population I stars?

Graduate Modelling density as a function of time?

Graduate Conservation of angular momentum

Graduate Questions about Black Holes And Time

Graduate Is Space Real? The Existential Question of the Universe

Graduate Dimensions greater than the third?

Graduate Hawking Raditation and particle-antiparticle pairs

Graduate Recession of M81 and the M81 Group?

Undergrad The Stephan's Quintet and Arp's Theories

Graduate What Are the Six Puzzles Challenging LCDM Cosmology?

Graduate Dark energy, vacuum, and uncertainty

Undergrad Does Empty Space Contain Mass and Energy?

Graduate Can photons create black holes despite being massless?

High School Planetary Alignment: Will It Affect Us?

High School Big Bang Questions: How Did Earth Form?

Graduate Age and structure of the Universe

Undergrad Cosmology Paper Ideas: Need Help!

Stargazing Telescope Illumination: Mirror Diameter & Focal Length

Graduate Explore the Mysterious Dark Photon

Graduate Why Does Dark Matter Cause the Flattening of Galaxies' Discs?

High School Stars in the Western sky in early evening

High School Why Do Planets Travel in Elliptical Orbits Around the Sun?

Graduate Confused about Imaging in Astronomy

Undergrad Solar Wind and Its Impact on Planets

High School How Can You Identify Meteorites?

Graduate Mysterious Motion of Galaxy Clusters Detected

Graduate Calculating Observable Universe Mass in the Lambda-CDM Model

Graduate Building a Universe: Is Matter, Energy Purley Information?

Undergrad What are the benefits of using interferometry for exoplanet hunting?

Graduate Could Dark Matter Form Planets and Stars?

Graduate Is the Universe Homogeneous or Isotropic?

Undergrad What Prevents Air from Flowing Out of Earth's Atmosphere?

Graduate Can Dark Matter Be Utilized for New Technologies and Applications?

Graduate Large-scale Cosmic Flows & Moving Dark Energy: Beltran Jimenez & Maroto

Graduate Big Bang vs Black Hole Singularity: Matter Compressed?

High School A star for every grain of sand.

Undergrad What Atmosphere Would a Metal Planet Have?

High School Can a Lost Space Toolbag be Filmed from Earth?

Graduate How Does the Temperature of Hot Gases in Galaxies Support Dark Matter Evidence?

High School Can anyone here please tell me about the sun dying?

Undergrad Are All Stars Struggling with the Coronal Heating Problem?

Undergrad Understanding how energy disappears

Graduate Eccentricity & GR precession; Mercury vs. GPB