- Big Trojan stability
- How doe a few hundred become billions?
- Photon Question
- Galilean transformation for space-time metric
- Why does the hubble parameter change?
- Habitable planet around Procyon possible?
- light
- How close can something get to the Earth and not impact?
- Stars in the sky
- Alternatives to mirrors and lenses
- quantum entanglement
- "Rockets don't work in vacuum"
- Gravity question
- Limits of greenhouse effect
- Water on tidally-locked planets
- opinions about Lorentz ether theory
- LET and SR
- Is the universe elastic
- This seems wrong...
- bound state vs. scattering state
- Black Holes Eating Space-Time
- The Big Bounce
- What is this type of eclipse?
- What is the nearest Black hole that is closest to our Star System?
- Are Electrons Black Holes?
- Vacuum energy and gravitational propagation
- kook or not kook? Abraham Ungar
- Problem With Comet Hartley 2 Images
- Gravitons and black holes?
- Speed X + Speed Y
- Do photons react in fields other than gravitational?
- question about the size of the visible universe
- If the Moon Were Closer?
- Mars-Tharsis Bulge; orbit stabilization
- Partial-plate tectonics
- Thermal Signature
- Near-Earth objects disrupting our orbit
- Bad Universe episode question, Aliens Attack
- Shadows in reference to latitude
- is there a reason the speed of light has its particular value?
- Mass of sub atomic particles
- Does a spinning star have more mass?
- 2 neutron stars colliding?
- Black hole
- Tweaking the speed of light?
- Concerning small (stony) meteorite falls
- bits of information
- NASA news conference on "exceptional object"
- What triggers radioactive nuclei decay?
- Whats happened to the Big bang experiment at CERN?
- projecting onto a hologram
- Gravitations from SMBH gamma-ray bubbles
- question about time travel
- Quick question Hubble/Swift Blackholes
- Ultimate velocity
- Our Sun in 250 million years
- Gravitation lensing/deflection - amateur observations?
- Would this solar system be stable?
- Schwarzschild's solution & blackholes
- So what are the consensus top 3 universe theories currently?
- Astronomy Volunteers Wanted Cambridge, MA
- gravitational influences on humans
- Age of solar system - starting point?
- "Blackholes"?
- Milky Way center as a quasar
- Question regarding lava flows
- Expanding Space
- Observational limit any time soon?
- [Expansion of space/time effect on time]
- Story ideas
- Earthquakes and Day length
- Type Ia supernova
- Asking for some advice
- If the universal acceleration increased what would be the tidal effects of that?
- Our brains and space time?
- anthropic principle
- magnetic vector potential
- Can universal expansion outpace gravity?
- Flow through a 5 dimensional ( 4d 1t ) space-time
- Sub-Planck Scale?
- False vacuum decay
- Glass slowing down light
- What Sun-watching, space-based facility, with a coronagraph, has the best resolution?
- The Sun bending 'light' questions
- How many black holes appear each year?
- Connection of two "types" of uncertainty
- Quantum teleportation
- Alpha Centauri about 1 Million BC???
- Universe Older than 13.7 and Previous Epochs in the Universe??
- Globular clusters, novae & RR Lyrae
- Into What Is our Universe Expanding?
- "Conformal Time" definition for a layperson
- Earthlike double planet orbit and tides
- The 11th Dimension
- Could the Earth be hollow?
- Gravity
- Quick "World Building" Question
- Understanding "expanding space"
- Question about fractals
- Solar-Power Farms in Geosynchronous Orbit
- What kind of energy was the one radiated from the big bang, before particles?
- Present Big Bang predictions?
- black hole gravity accelleration
- Redshifts of stars within galaxies
- Earths Motion in Space
- Freefall into a Black hole
- How does the hubble flow effect our perception of the universe?
- View from the other side of the Universe (hypothetical)
- What is stopping light from traveling faster?
- Anti Matter
- Relativistic Mass
- Binary Neutron Star System
- Planets and Stars.
- What does a Pulsar look like?
- GR + SR
- Is Red/Blue Shift Quantized?
- An Io-Type Planet
- Universe - The Cosmology Quest
- Extraterrestrial lakes (oceans)
- Shapiro Delay
- What role does momentum play in the stress-energy tensor?
- What is the event horizon of a freefaller into a black hole?
- Does a black hole absorb zero point energy?
- Why don't gravitons cast gravity shadows?
- Steel sphere
- Dark Matter / Energy - 5th grade science?
- melting curves for compounds
- Gravity and the Doppler Effect
- Cehpeid Stars
- Would flora/fauna on an Earth-like planet be edible?
- concerns about a vacuum metastability event
- How is zero point energy affected by universal expansion?
- How do I read astronomical catalog object names?
- Asteroid Differentiation
- Acceleration of photons in Expanding Space.
- If the Sun's radius expanded, how would it change the density
- That universe [expansion] question you've seen so many times before.
- Is it possible for gas giants to have quakes?
- starbursts, galaxies, merging galaxies
- Could dark matter simply be a fundamental interactive force?
- What is the Bootes void?
- If Aliens were real why wouldn't our sun be a prime target for an Alien Dyson Sphere?
- Does light from distant stars follow a straight line?
- Why is the night sky night bright?
- Something strange
- Environment of galaxies
- Fate of relic radiation patterns
- CME = solar flare?
- Gravitational lensing of Gravitational Force
- dark matter question
- Haven't seen the moon in day's
- Finite+ Unbounded + Flat = Huh?
- Information Transfer Beyond the Reach of Light
- Calculating Comet Mass Loss
- Why are there Twinkles in this Hubble Deep Field Photo?
- Stars Without Galaxies
- Regarding Physics/Cosmology Education
- Big Bang as a White Hole.
- Stellar systems like our own rare?
- What if the earth had two moons ?
- questions about C/O ratio on WASP-12 b
- Many Worlds paradox?
- Ringworld: Vast Shallow Seas
- Black Hole Hypothesis
- Liquid Giants
- Time Dilation and Negative Coordinates in Moving Frame
- What is a white hole? and does it have gravity?
- Dark Matter
- Is the Milky Way expanding?
- Rubik's Cube... [model of Universe expansion]
- Unification of Forces and ultra low temperatures
- How come NASA images are not small movies?
- Hottest and coldest days of the year
- Voyagers in inter-galactic space?
- Something From Nothing?
- Higgs Boson will never be found by LHC
- Can anyone offer a good explanation of Stephen Hawkings theory about no God?
- Ultimately, are there no dimensions?
- Can the spin of a black hole be increased to the point that it tears itself apart?
- Lunar Orbital paths traced on Earth?
- Any purple exoplanets in the Milky Way?
- If our universe was part of a multi-verse what is the observational evidence!
- Does gravitational lensing cost energy?
- Could a black hole tear apart an infalling proton or neutron?
- What could be learned from a naked signularity?
- What's The Best Theory On No Galaxies In Groups...
- star color?
- Wouldn't it be bad if a major CME was just blasted off the surface of the sun?
- Cyanide radicals...
- The great expansion ?
- Surface gravity
- Fractal Space-time, E-Infinity, Anti De Sitter Space, Holography and Black holes.
- Gravitational Attraction
- Protons and Electrons are just like photons?
- Are shadows conical?
- Big Bang - having a problem understanding something.
- Asteroid and moon craters
- How does the moon stabilize Earth's axis?
- Gravity, mass and density
- Lunar Eclipse Aberdeenshire 2010
- Questions: Apollo lunar missions
- "Terrifying" Sun changes
- How to shield from >10 MeV proton flux
- Neutron Stars
- Fate of the universe?
- Tidally-locked and Magnetic Fields
- The Milky Way center - how close is too close for humanity?
- Doubt regarding moon perigee
- Why is there life in the cosmos at all?
- Apollo astronauts during a lunar night
- matter is a probability wave?
- Cosmic Background Radiation and Earth's Atmosphere
- Arctic Circle is anomalously "too bright" for this time of year?
- Universe likely to end before Sol leaves Main Sequence?
- Oort cloud and nearest neighbor
- Uranus' tilt/ moons question
- Could a change in the higgs field alter the speed of light?
- zero point energy vs mass
- FTL question.
- My compasses turned left
- Astrobiology question
- Bake sale for space
- Wavefunction and complex number
- Historic Perihelion Dates
- Photons Within Stars
- Stars only inside of galaxies?
- What happen if Venus hit large Asteroid ?
- Moon Landing
- Best objects for binoculars
- The Limits Of Astronomical Interferometers?
- Closest Possible Lunar Orbit?
- Would a human feel the gravity of jupitar standing on one of it's close moons
- HUP
- Rate of photons from approaching light source.
- Tolerable interstellar space conjecture?
- Earth vs. Mars Polar Icing Episodes
- Why is mercury so small ?
- Moon's perigee and apogee
- Heat produced from tidal friction
- What are some good videos on space and astronomy?
- Explaining dark matter
- Voyager / stars / gravity / galaxies
- What makes a magnetar a magnetar?
- Moon water came from Comets, it is suggested...
- What is Strange Matter and Mirror Matter?
- Rotation speed of variable stars
- Could anyone explain quantum fluctuation?
- Time Travel???
- orbital orientation
- A question about Jupiter's Mass and gravitational effects?