- Exhaustiveness of radial velocity?
- Designation of Electron Shells
- Higgs field and expansion of the universe?
- rolled up dimensions
- Is the universe constantly expanding, or...?
- Appearing & dissapearing, Comet? / Dwarf?
- Spiral galaxy center blue or red?
- Color Color diagram (U-B) (B-V) how to read it?
- Replace our Moon with Pluto and Charon...
- Orbital energy conservation
- Eleven Day Long Gamma Ray Burst?
- Yet More Planetary Orbit Questions From The (Recently Bathed) Masses.
- The sound of the stars
- quazars, pulsars and distance?
- What is an emitting atoms damping force?
- Station shielding requirements for polar orbit?
- HD 20334 - Double or Single?
- Yet another black "hole" question -- emphasis on hole
- Grade 9 Sciene Fair, Asteroid Experiment Question
- Why do Black holes have different Masses?
- centrifugal force
- Julian date conversion - doubt
- Time Dilation Approaching the Event Horizon
- Really big black holes
- [profloater asks about blackholes/gravity]
- Classical Gravity Question: F = G m1 * m2 / r2 goes to infinity as r->0?
- Stable orbits inside of the event horizon of a black hole?
- tired light-spread of the Fraunhofer lines
- Petroglyph shows comet Encke breakup in 536 AD?
- parallax measurement of near stars
- effect of long wave photons on atoms
- Wesenheit magnitude; what is it? How to determine it? and vs absolute magnitude
- gravitational force vs gravitational potential ( of a sphere )
- Widening the Parallax baseline?
- How Tip of the Red Giant Branch helps determine the distances in the universe?
- Cepheids metal abundance changes = cyclic?
- dex^-1
- Selective Extinction
- Would the EH form first in the center of a star?
- New Force of nature? How will it
- The Moon
- When did the oceans come?
- View from above the ecliptic
- Internal structure of stars... convective vs. radiative zones
- What if you could slam Mars & Venus with a 100 or more gigantic water rich comets?
- Orbit a Black Hole?
- Is 1km the same in all frames.
- Void Space Geometry
- Acamar coordinates
- Recessional velocity = radial velocity? (Hubble diagram)
- Red tint to the moon?
- Engineering Project Help
- Visible Universe and Quantum Tunnelling.
- Positions of bodies on the sky
- y9 brown dwarf
- How Triton will die
- olbers paradox and a static universe
- Night time viewing from an airless Earth
- pion zero
- Wind on Planets
- Have we observed the upper-end limit on stellar masses?
- Is the universe expanding? What if......
- Help? Stumped on sign of second term in Liouville Theorem
- How can we tell the materials an object is made up of from so far away?
- Jupiter producing enough heat?
- How much can greenhouse effect extend "habitable zone"
- How much energy resides in neutrinos from the Sun?
- Are there two speeds of light?
- comet elenin collision probability
- Maser Galaxies. How this method of distance determination works?
- Surface Brightness Fluctuation. How it is used for distance determination?
- de Sitter
- SETI and doppler shift
- Mass increase at near c.
- Pre-telescopic Sun: what had been discovered?
- how fast could a civilization arise on a "brand new" planet?
- Binary star mass-ratio distribution?
- neutrino masses
- Cockroaches
- Martian origin "widely accepted"? Really?
- Your Vision of the Alpha Centauri System?
- Question about event in February 1991
- how fast are the convection cells of the suns outer layer?
- Son's Question [Is there life on Mars]
- Observation of red-shifted objects and optical filters
- Questions About the Solar Wind
- What are the Extragalactic distance indicators ranges?
- Supernova type Ia peak absolute magnitudes.
- Saw a bright flash Saturday night... meteor, UFO, lightning?
- Least amount of light pollution near Houston?
- Miniature black holes from accelerating a particle to the speed of light.
- Could you calculate speed based on mass?
- Two Moons?
- Universe accelerating expansion
- Sun companion?
- Simple lectures form Solar Physics
- help understanding images of M1, the crab nebula
- Surface of last scattering question
- Galaxy Redshift Survey Map
- What is the maximum wavelength light can have?
- BB theory of hydrogen
- all the water on Earth is 4.3 or 4.4 billion years old, really ?
- Dark Matter and The Solar System
- How long does space sickness last?
- Please, i have 2 questions
- Gravitational capture
- Body temperature measurement on the Apollo Missions
- Good theories can make predictions.
- 3D Gravitational Map
- If Proxima were frozen...
- Why is space expanding faster at greater distances?
- Radio telescopes and weather
- The Information is There.
- Good QCD/QED articles?
- Seems our solar system almost had 3 Earths.
- Raging storms sweep away galactic gas
- jupier perihelion when?
- Theoretical reasons for a silvery Sun
- Travel to Andromeda and the time it takes
- The space tether experiment
- Might Venus & Uranus`s "problems" have the same cause?
- big bang and singularity
- Extraterrestrial planetarium software
- Interstellar Medium; current leaders, current challanges?
- Geminga and older nebulae
- By Popular Demand [definition of Space]
- Io's Ocean of Magma ?
- Mars
- Parameter of ionization
- What is Comet Machholz Orbital Period?
- Expansion of Space and Age of the Universe
- Question about liquid H2O
- Hot UV Stars, what happens to the IR ?
- Temprature of a Nebula.
- Moonlight
- Reality inside a craft at the speed of light
- Could I make a telescope out of a plastic bag and air?
- Does relativity imply an infinitely old universe?
- Can *you* read by moonlight?
- our super massive black hole jets?
- Gravity and Mass
- The visable universe % wise
- OK, pretty simple question here, but surprisingly difficult to Google
- Seeing Earth motion from Sol
- Nearby galaxies magnified to equal length
- Vacuum energy tensor
- Mathematical solution to calculate an object's orbit in space?
- Theoretical question about negative energy
- Would Tachyons have negative real mass?
- Masses of the up and down quark
- How can the universe be "infinite" in any way ?
- Vanishing planets
- Are there any starbirth picture sequences?
- Universe expansion: seeking a couple of answers...
- Andromeda Galaxy Blueshift
- Could You Fall Faster Than the Speed of Light?
- What wavelength of the photon is needed to separate hydrogens in H2 molecule?
- With our present technology what percentage of the speed of light
- HW help: divergence of electric field
- Has anyone ever used a laser to measure the distance to comet Hyakutake?
- An attempt to understand Special Relativity
- Earth's Gravitational Energy
- Textbook Recommendation for Cosmology
- Seeing Stars
- 21 cm line in HI region. What causes the change of the spin?
- If you compressed something to a black hole, do you have to keep compressing it?
- Question or review about current text in cosmology?
- Visibility of dihydrogen
- Temperature and Density Determinations
- Liquids in Space?
- another black hole proposal
- How dangerous are supernovas to Earth
- Query regarding the 2MASS Galaxy Catalog
- Infinite expansion?
- What's the closest Titan could be to the Sun & still retain its atmosphere?
- Ectoplasma
- Do we have any idea of the actual present shape of the universe?
- Decompression on spacecraft, minor question
- Can Hot Ionized Medium be called nebula? X-rays source in it, and the cooling mech...
- Delta particles
- Extrasolar "Oort" Clouds?
- Delta V C3??
- What happened here? [Australia - comet? asteroid?]
- Constellations question
- Life on a non-rotating Earth
- The sun highlights space and casts our shadow into infinity.
- if our moon was made out of negative mass could it still have a stable orbit?
- Speed of momentum equal to c?
- Help
- Solar Oscillations: frequency vs angular degree
- surface of the sun
- Singularity
- Photon momentum and spin angular momentum
- Basic realitivity question
- What is Io's wattage? How and when is Io going to die?
- Gravity, physics, and science
- Oort Cloud or Oort Disk ?
- Planetary Rings
- Matter wave
- Iron rings
- Properties of Light between Dark Matter clumps
- Anybody has this book: S. Chandrasekhar, ”The Mathematical Theory of Black Holes” ?
- Energies of solar neutrinos
- Double layers (Plasma) - Detection.
- Ice Rocket
- Help finding the Hipparcos Catalogue
- Effects of an 1859 Carrington Event today
- LHC - time travel?
- Bad science...Bad astronomy.
- Spacecraft films
- "Shadow Matter"
- Crossing main sequence
- Saturn Electric Link with Enceladus - Magnetic Field Line Terminations
- Voyagers Find Giant Jacuzzi-like Bubbles at Edge of Solar System - UT Story
- Double-Slit Experiment in a Vacuum
- Concentric circles in space
- What the heck did I just see
- Are the Voyager probes technically still in our Solar System?
- strong force
- Astronomy Teaching Standards?
- Contribution to Gravity from the Earth's orbit round the Sun
- The Singularity (1st moment before expansion)
- Cosmic distance statements
- God does not play dice, schrodinger's cat?
- "Light has not had time to reach us."
- Gravity and its weakness???
- Finite universe?
- Black Holes and information
- In a non accelerating expanding universe does local time dilation create acceleration
- What is a 'coupling constant' in regular English?
- Which star was the closest to Sun 65 million years ago?
- What did I see?
- Quantum Mechanics and the size of the universe
- Effect on Solar System of a planet's removal
- How Big Was the shooting star I saw
- Solstice question
- Direction of the Helionose
- Reciprocal of c^2
- Bring Cassini home
- wind atlas
- Horizontal takeoff from a balloon
- dark matter in pandora cluster
- Universe's highest electric current found
- If a large comet or asteroid struck the moon...
- Opaque universe question.
- Large scale relativity question
- Supernova/Gamma Rays/Ozone layer...
- Frame dragging.
- Energy in the early universe..
- Quantum Fluctuations in the far distant future