Astronomy, Astrophysics, Cosmology Forum

Undergrad Calculate distance between stars in a globular cluster?

Graduate Is the Universe Really Expanding from a Single Point?

Undergrad Could Apophis Change Earth's Future in 2036?

Graduate Candidates for baryonic dark matter

Graduate Are Gravitational Effects Infinite in Black Holes and Wormholes?

Undergrad What is the synodic period of Mercury?

Stargazing Telescopes: Magnifiers or Time Machines?

Graduate Age of universe and time dilation.

Graduate Gravitons: Clumping & Gravity Anomalies w/No Mass

Undergrad Is a Space Station More Cost-Effective than a Moon Base?

Graduate Dark Matter/Dark Energy Question

Graduate How Can I Mimic the Best Fit for HD17156b's Radial Velocity Data?

Graduate Simulating the Primeval Plasma to Create a Universe

Undergrad Dark Matter vs Ether: What's the Difference?

Undergrad Redshift at the epoch of matter-radiation equality

Graduate Max Distance & Time Til Sky Nearly Black

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Undergrad Is 34% far or slightly smaller than 100%?

Graduate Emitted radiation and absorbed solar radiation

Graduate What caused the physical laws we have?

Graduate Evidence for Dark Matter Beyond Rotation and Clusters

Graduate Dear Marcus: Your View on Two Properties of the Universe

Undergrad How is the energy transfered back to the Moon

High School Titan - the next closest thing to Earth.

Undergrad The Big Bang & The First Galaxies: How Old Was the Universe?

Graduate Time & Space: Was the Physical Universe Created With Them?

Graduate Could Solar Wind Be the Source of Dark Matter?

Graduate Has Electromagnetism Shaped Cosmic Structures?

High School Help with Jupiter and Saturn please

Graduate Why doesn't iron give off any energy when it is created through nuclear fusion?

Graduate Does time slow down when falling into a black hole?

Graduate Space where General Reletivity Resides

Graduate What is the heaviest element that a supernova can produce?

Graduate What Theory Proposes an Infinite 4D Universe Beyond the Big Bang?

Undergrad Universe Expansion: Understanding the Role of Geometry in the Expansion of Space

Undergrad Stellar orbits around the milky way.

Undergrad Transit Method to find extrasolar planets.

High School Quick easy clarification (redshift vs blue shift)

High School Saturn's Rings: Why Are They Split?

High School What Does Empty Space Really Mean?

Graduate LQG Theory: Is Universe Closed or Infinite?

Undergrad Finite vs Infinite: Does Size Matter in the Universe?

Undergrad Is a Symmetrical 'X' Planetary Alignment Possible in a Solar System?

High School Please answer My Many New Bee questions on a Black hole.

High School Brightness of ISS in Earth's shadow

Undergrad Neutron stars and magnetic fields

High School This first thing that Kills a human in Space?

Graduate De Broglie equation and black holes

Graduate Is there a beginning to chaotic inflation?

Stargazing Viewing Saturn from a 6 telescope

Graduate Linearly-expanding FRW model matches DL-z observations

Graduate Can Energy of Creation Connect Us to Our Origins?

Stargazing Where should the secondary mirror be placed in a concave mirror telescope?

High School GR Predicts Expansion of Universe: What Does it Mean?

Stargazing Why does Saturn move so much in my telescope?

Graduate Is It Possible to Have Infinite Mass?

Graduate Law of entropy vs. Big Bang Theory?

Graduate What Is the Empty Space into Which the Universe Expands?

High School Planetary Alignment (nothing to do with astrology)

Undergrad Big Bang From A Collision Of Protons?

Undergrad What is the percentage of heavy element of the sun?

Graduate Welcome Newbie: Discovering the Edge of the Universe

Graduate Understanding Energy Density and Cosmic Expansion

Graduate Can dark matter explain the flyby anomalies?

High School Measurement of distance in space

Graduate Did Time, Mass, and Energy Exist Before the Big Bang?

Undergrad A few key questions about the Big bang model of the universe

Undergrad Rail guns for launching projectiles to space

Graduate Measuring Star Diameter in Foreign Galaxies

Graduate Cosmology Explains Uneven Universe Density & Matter/Anti-Matter

Graduate If the universe came from nothing

Graduate Earth's interior heat vs Gravity

Graduate Does Asymmetry in Spacecraft Flyby Trajectories Cause Unexpected Energy Gains?

Graduate Stable Blackhole: Radius Dependence

High School What Causes the Colorful Cross in Photos of Sirius?

Graduate Is the edge of the universe the begging of time

Graduate Stability of Counter-Planets: Examining the Possibility of Dual Planetary Orbits

Undergrad How Can You Capture Star Spectra for Astronomical Analysis?

Undergrad Is Space Infinite? - What Do You Think?

Graduate Accelerating Universe: Rate of Expansion Constant?

Graduate We know that there are opposites all around us with energy, you have

High School Is the bright star I saw in the west sky Venus or another planet?

Graduate Could the Big Bang Have Been A Cyclical Event?

Graduate Can our Nuclear weapons destroy a Neutron Star?

Undergrad How was Voyager 2 used to determine the orbits of Uranus and Neptune?

Stargazing Struggling to Focus with New Telescope? Here Are Some Tips!

Graduate String/ M theory and Dark Matter

Graduate Particle Creation: Uncovering the Universe's Origins

Graduate Can Dark Energy Be the Sole Source of Gravity?

Graduate A question about energetic protons (cosmic rays)

High School Planet Gravity: What Makes Objects Attract?

Graduate A Star's Life, (Full Explanation)

Graduate Anti-Gravity and Black Holes: A Theoretical Analysis

Graduate Calculating the luminosity density of the universe