Astronomy, Astrophysics, Cosmology Forum

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Undergrad Do galaxies disappear from our view as cosmic expansion accelerates?

Undergrad Is a Miniature Solar System Being Born?

High School What is a Black Hole Actually Made Of?

Graduate Need WMAP error bars for CMBFAST power spectrum output

Undergrad The Universe as big as a basket ball?

Graduate What is Causing the Expansion of a Singular Particle in an Absorbed Universe?

Graduate Recent Supernovae Ia observations tend to rule out all the cosmologies

Graduate Paper - Sun not powered by H fusion

Graduate Could Flattened Disks Explain Galaxy Rotation Without Dark Matter?

High School Is Zeilkik and Gregory's Introductory Astronomy & Astrophysics still worth reading?

Undergrad Jupiter as a Gravitational lens?

Graduate Does natural selection apply extra-galactically?

Undergrad Edmund halley and the venus transit

• Poll

Graduate Will humanity reach another star system before self-destruction?

High School Probe returning with asteroid rock sample

Graduate What Is the Entropy of a Black Hole?

Graduate Does mathematics rule the universe?

Graduate I tend to think of the universe in a simple matter

Graduate Why Did the Big Bang Create Irregular Bumps Instead of Expanding Uniformly?

Undergrad Why are our planets and galaxy in a plane shape?

Graduate Gravitational tractor for towing asteroids

Undergrad Why does a gas cloud spontanously rotate?

Graduate Could Quasars Be Ejection Events Instead of Collisions?

High School Speed of light? Or velocity of free space?

High School What is at the center of a galaxy?

Graduate If space is flat then what is directly under the planets?

Graduate Planets cause a warp in the fabric of space time

Graduate Why does a flat universe expand forever but acceleration suggests it won't slow down?

Graduate Does Gravity Play a Significant Role in Accretion?

Graduate Wien's law, planetary mass, orbital period, and Kuiper belt problems

Graduate What Are the Best Papers on Dark Matter and Dark Energy?

Graduate Patent 4 a close 2 C space vehicle drive

Graduate Speed of object in free fall from the Moon's distance

Graduate Would a lunar settlement need artificial gravity and can it be rotated?

Graduate Acceleration of charges at Big Bang

Undergrad Does Gravitational Attraction Cause Energy Transfer Between Celestial Bodies?

Undergrad What Do We Know About the Composition of Mars' Moons, Phobos and Deimos?

Undergrad Why doesn't gravitational lensing create a ring instead of multiple images?

Graduate Models for Compactification from Inflation?

High School What Can You See With a Telescope During the Day?

Graduate Did Inflation Solve the Problem of the Universe's Original Gravity?

Undergrad Seeing light from early Universe

Graduate Could universal expansion be infalling toward a cosmic center of mass?

Graduate There must be a center to it all.

Graduate Can 10000kg bolts and nuts be screwed precisely in space?

Graduate Black Holes: The Possibility of Energy to Matter Conversion

Graduate Would different physical laws arise if we restarted the Big Bang?

Graduate Can We Pinpoint the Direction of the Big Bang's Origin?

Graduate Is Dark Matter the Unruh effect applied to the acceleration of Gravity?

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Graduate Response to Fermi's paradox: are we the first colonizing species?

Graduate Could the Speed of Light be Calculated Differently?

Graduate What is the diameter of the observable universe?

Graduate Is there a law of conservation for space itself?

High School Does the moon's rotation slowly change so we see more of the far side over time?

Graduate Energy Requirements for Compressing Matter into a Black Hole

Stargazing What features should beginners look for when purchasing a telescope?

Graduate Glass Planets: Common and Detectable in Our Galactic Neighborhood?

Undergrad Why Does Venus Rotate Backwards?

High School What is the Truth about Black Holes and Light Holes?

Graduate Is There a Way to Distinguish Between Singularity and Matter in Black Holes?

Graduate What happens inside a black hole?

Undergrad Why are geosynchronous orbirs in equatorial plane circular?

Undergrad IS IT POSSIBLE TO CREATE A TRANSPARENT SHIELD FOR SPACE STATIONS?

Stargazing Telescope acting like microscope

Graduate Can White Holes Challenge the Second Law of Thermodynamics?

Undergrad [stars] Nuclear Fuel usage rate

Graduate What Happens to the Universe if Omega Equals Exactly 1?

Graduate A rulebased universe is much more compelling

Stargazing Animation I made last night of Mars

Graduate Is a neutron star held together mainly by the strong force?

Graduate Can an infinite universe be a closed system for entropy?

Graduate Could a Supernova Have Killed Off Mammoths?

Graduate Could the Big Bang Be a White Hole?

Graduate What is the appropriateness of the term potential in general relativity?

Undergrad Maximum range of a missile accounting for Earth's curvature

Undergrad Are There Tables Showing Distance vs. Red Shift of Stars?

Graduate Can you observe evidence for a multiverse?

High School What is the biggest star we know of?

Graduate Photon, Gravity, Mass and Black Holes.

Graduate Is Our Universe Just a Giant Black Hole?

Graduate Is the Universe Infinitely Old and What Would We Expect to See?

Graduate Are Traces of Earliest Stars Actually Detected?

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Graduate Massive objects with super-solar metallicities at z~6

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Graduate Is the Universe Finite or Infinite? A Poll on the Current Debate in Cosmology

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Graduate What alternative theory might solve the dark matter problem?

Undergrad Specific definition of space in BB

Stargazing Are There Non-Photonic 'Telescopes' for Studying Astrophysical Objects?

Graduate An anomalous concentration of QSOs around NGC 3079

Graduate Values of an rms speed of hydrogen atoms in the observable universe?

High School Lower mass = more elliptical orbit?

Graduate Scientific method and predictability in cosmology