Astronomy, Astrophysics, Cosmology Forum

Graduate Is the Particle Horizon Calculation Affected by Inflation?

High School Why do stars look like they have points when viewed from Earth?

Graduate Can Planck Time Explain the Age of the Universe?

Graduate Is There an Equivalence Between Fundamental Forces and Spacetime Geometry?

Undergrad Does an infinite universe effect an infinite outlook?

Undergrad Does Earth's Size Affect Your Weight?

High School How Was the Parsec Calculated?

Undergrad Educational value of going through a Hoagland webpage?

Graduate Can Black Holes Increase Their Mass According to Remote Observers?

Graduate Can we tap into dark energy and use it?

Undergrad Expanding universe and absolute zero

Graduate Two Big Bang theory and early star formation

Graduate Accelerated expansion and its rate

Graduate Could There Have Been Two Big Bangs?

Undergrad Calculating Solar Sail Size for Propulsion Against Sun's Gravitational Force

High School Is the Oort Cloud confirmed or still hypothetical?

High School Arguments against the Big Bang theory

Graduate Ultra Deep Field raises questions

Graduate Is information lost in a black hole?

Graduate Hand motion through curled dimensions in string theory

Graduate How Do We Differentiate Between Relativity and Doppler Redshift?

Graduate Gzk paradox and expanding universe

Undergrad Energy and the end of the universe.

High School Why are O and B class stars so rare if they form in current star-forming regions?

Undergrad Is Jupiter Losing Its Spots?

Graduate The Big Bang: Inside a Singularity

Undergrad Do All Man-Made Solar Satellites Share the Same Orbit Orientation?

Graduate Maximum force limit on quark radius and Big Bang singularity

Graduate Galaxy 13 billion light-years away observed 750 million years after Big Bang

Graduate Why is there no symmetry in space vs. time dimensions?

Graduate Inflationary Theory. Absolute Vacume.

Undergrad How Can Gravity Be Simulated for Space Travelers?

Graduate Is the Schwarzschild solution an approximation that invalidates black holes?

Graduate Was the entire universe a Black Hole for many years?

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Graduate Could the universe's large-scale shape match a Calabi-Yau manifold?

Graduate Finite hyperbolic universe and large scale structure patterns

Graduate Making a Black Hole Bomb: Exploiting Superradiant Scattering

Graduate How do General Relativity and the concept of the graviton relate to each other?

Undergrad Why do we believe ultra high energy cosmic rays come from supernovae?

Graduate How is the density of a white dwarf star calculated?

Undergrad What could we discover on Titan?

Graduate Is Proxima Cen the nearest star?

Undergrad Senate hearing on near-Earth object detection funding

High School What is a cosmic accelerator?

Graduate Origin of Matter and the Universe

Graduate Interstellar Medium and Pulsars

Undergrad Using an artificial bright flash to detect distant objects beyond Pluto

Graduate Alpha does not vary with time - new study's stringent limits

High School What Causes the Twinkling of Stars?

Undergrad Age of universe compared to age of sun.

Graduate Gravitational field of globular clusters ?

High School Could the universe be expanding because matter is increasing?

Graduate Did Supermassive Black Holes in Quasars Form Before Those in Galaxies?

Undergrad Good astrophysics schools in california

High School Technical name for 'day' on other planets

Graduate What caused inflation in the big bang theory?

Undergrad Why do celestial bodies orbit in such precise speeds and patterns?

Graduate Energy requirements and mechanics of hyperspace travel for fiction

Graduate Chaotic Milky Way and Dark Matter distribution

Undergrad What is the cause of the mysterious blue band surrounding Jupiter?

Undergrad Book recommendations for celestial mechanics

Graduate Where does the energy go when an object radiates gravitational waves?

Graduate How does the scalar field in inflation theory cause expansion and supercooling?

Graduate Would a collision between a black hole and dark matter be detectable?

Undergrad If Today's Phoboday, this must be Mars.

Graduate Matter Exceeding the Speed of Light

Graduate Does Dr Kaku accept the Two Big Bangs theory?

Graduate Can Spacetime Curvature change c ?

Graduate Can photons escape a charged, spinning black hole?

Graduate Accepted value for Omega of radiation energy density

Graduate How are space and time related in the space-time ripple-nipple phenomenon?

Stargazing Can the Hubble Space Telescope Really See 14.5 Billion Years into the Past?

High School Methane on Mars could signal life [now]

Graduate Alternate Explanations for Redshift in the Universe

Undergrad Should we terraform Mars if life already exists there?

High School Supernova could wipe out all life on earth ?

Graduate What does launch angle to the vertical mean for a satellite interception problem?

Undergrad What triggers gravitational collapse in a gas cloud?

Graduate Gravity inside a hollowed-out planet with a thick crust

High School NASA Announces Evidence of Briny Water on Ancient Mars - Implications for Life

Graduate US military plans for space-based weapons

High School Working on a dossier project for my Java class

Graduate How realistic is the concept of wormholes for space travel?

Graduate Is The Speed Of Light Slowing Down ?