- Is gravity free?
- Wdith of the Sun's habitable zone?
- Solar System Angle to Galaxy
- Nuclear Bomb in the Sun?
- cosmic ray panel
- Multiple universes like a foam and membrane universes
- What happens if two black holes get very close, but don't fall into each other?
- Density of the Sun's Surface
- Implementing solar system gravity simulations
- Music on Mars
- A question about Ptolemy's model
- How to calculate perceived gravity when rotating?
- Asteroid Apophis 2004MN4
- Expanding universe
- Simulations Show Liquid Water Could Exist on Mars / New Phoenix Lander results
- A simple but abstruse black hole question
- What would happen if gravity acted sideways?
- Twin paradox (relativity)
- Humph about Haumea
- Strange Stars
- Double Slit Experiment
- Fantastic Idea Needs Help With Mathmatical Descriptions...
- What is entropy?
- E = mc squared and black holes.
- Please can you confirm this
- What the heck is this Dark Flow that I've been reading about?
- Opinions for a game...
- Earth over weight?
- Lunar Exploration Question
- Speeds and Motion
- multiple star systems
- Mass/Energy hitting the Earth
- How quick can a black hole gobble earth?
- duration of Full Moon viewed from Earth
- Teaching Kids - 9 and 10 about the big bang
- Cygnus bubble nebula
- Lorentz contraction 3
- Cmbr
- What do we know about the Tyco impactor on the Moon?
- Night sky on exoplanet
- Warp drive/conventional drive question...
- Lost on the Moon - from Nasa?
- Galaxy Clusters Sliding South?
- 2012 Vectors
- distance of sound emitter
- Mind bender on light speed
- Rearding Evanescent Wave Coupling
- Regarding Quantum Tunneling
- New book-need reviewers
- Star colors
- Do all plantets in a system have a sun near them?
- Nibiru Question
- what-if question for gravity
- If There Was No Jupiter Would Would Happen to Asteroid Belt/Mars?
- Interacting Blackholes ?
- Viewing Distant Terrestrial Planets
- How fast is everything slowing down?
- What is the potential gravity ( gravitational potential ) at the center of the earth?
- CBM and background radiation questions
- Teaching Yourself Astronomy
- Is bubble fusion a realistic goal, or just plain woo-woo?
- acceleration and simultaneity
- Infinite Universe
- proton + electron = neutron | what about the quarks?
- Why Do We Have an Atmosphere?
- Black Hole Jets and Evaporation?
- Chemical And Ion Propulsion?
- 3 questions about close apporach of baryons
- g and bismuth
- acceleration, simultaneity, and the twin paradox
- dont get it
- Energy source in the far future
- My geometrical reasoning for infinite universes (and questions)
- Have we contaminated Mars?
- meteror
- the little goat
- If our atmosphere is being held by gravity, why isn't it brought down to the surface?
- Anti-privacy Technology
- What actually is going in when mass rotates or translates?
- Meteorite and Fireball Reporting
- The Moon, Engines And Lower Gravity
- Potential energy and gravity
- crackling, hissing meteor?
- Expanding Universe Energy Question
- nebular hypothesis
- astronomical units
- question about gravitons
- Maxwell's equations
- perihelion and the winter solstice?
- Jupiter Red Spot a cyclonic vortex?
- A Relative distraction
- LBV structure
- ancient astronomers measuring vernal equinox
- Career Problem
- Gravity Analogy...
- Space Shuttle Question
- Atmospheres of Galaxies and Galaxy Clusters
- heavenly accurance in 1935-37 HELP
- Shape of the Universe
- The expanding cosmology...
- Question regarding solar storms/flares
- Relating GR and SR
- Hello Again! Space Shuttle Landing!
- Bullet Cluster question
- Mr Bigelows bugs...
- acceptance of String Theory ?
- What's the fuzzy thing?
- What would cause the big bang to occur?
- What causes the Shuttle's main engines to glow on landing in this image?
- Unchanging Night Sky
- Teaspoon of Neutron Star Matter
- dinosaur constellations
- spiral arms in dark-matter galaxies
- Dark matter and the slowing of time
- relationship between Pi and Planck units
- Are the M51 and M101 groups receding from us?
- Need Help: Mathematical Astronomy Problems
- Phoenix
- happy face in sky
- FTL - Rambling Thoughts
- 2 Planets, 3 Moons, same orbit - possible?
- Simple BH question.
- Black hole vs unbreakable/unellastic rope.
- Rotation + Speed of Light
- just curious
- Why dont we look towards the beginning of space?
- Metamaterials: why not telescopes?
- How many supernovas have been observed
- Lumpiness of Universe
- My balls are in motion
- what black holes really are
- Jupiter
- Our planet earth
- How to see Earth at its beginning...
- black hole in center of every galaxy?
- Lunar lights
- Is the Mass of the Coma Cluster Entirely Baryonic?
- Hawking radiation
- Black holes and photons
- Question about the Twin Paradox
- was the big bang hot?
- Energy of proton?
- Gravity by light.
- I'm overwhelmed...
- How can mass be compressed into such small volumes?
- Regarding Frames of Reference & Mass/Energy equivalency
- REAL star looks
- Question for the Mathematicians (amateur and pro)
- At what distance from us (centre of Milky Way) is MES > gravity?
- big bang and temperature
- VENUS planet of Heat.
- The stars we see
- Lunar Maria
- Simple Question: Distances & Discoveries
- Star Nurseries
- brightness question
- black hole
- Can O/B Stars Have Planets?
- Could I Have Seen The Same One?
- Relativity & Light Question
- black holes
- Brightness on different Celestial Objects and assorted Madness
- rolled up dimensions how do they work?
- light escaping from a black hole question.
- Gamma Ray Bursts and Supernova
- Odd things floating on google sky
- Spectrochemical Analysis to search for extrasolar life
- Why can't terrestrial planets be larger?
- 2. Is this really a paradox “irresistible force meets an immovable object"
- Nubie unification question
- Light!
- Speed of light in a multidimensional universe?
- mercury/venus
- Lunar orbit
- Panspermia to Jupiter
- Astronomy calendar
- atomic clocks and spacetime
- Time in Episode Relativity, Relativity and more Relativity.
- Wavey Nature of Everything?
- Age & distance of the edge of the visible universe
- Accelerating expansion.
- Where have the sunspots gone?
- CMB is different in the distant universe - evidence?
- What is nothing?
- Most common particle in the Universe?
- Copper Spectral lines info
- Could someone please tell me what it is I am seeing here?
- Lost of Information
- uhh.. is Special Relativity as simple as...
- cyanogen
- Help with the physics of fringe claim
- Slow Light?
- Noob's relativity question
- Viking lander thingy
- Hot Jupiters and Earth-Sized Exoplanets
- Lines of stars in M13
- Crescent Jupiter
- redshift
- Question about Viking 1,2 experiments
- gravitational field, force at a distance
- REAL zero gravity combat
- Astronomical event, June 4, 1988?
- Rotation of our planet
- Rogue Planets
- gravity at the earths core.
- The Path of Math
- CMBR: not affiliated with the Big Bang?
- Planet above Phoenix sky
- Is plasma physics taught at your university?
- Question of Quantum Teleportation in Space?
- What is the gravitational redshift at the surface of a common neutron star?
- Dark matter and energy, is it a reality?
- our "place" in the "universe"?
- Question about the Clouds...
- Oxidation
- Extremely long mechanical link between moving clocks
- space propulsion
- matter, once again...
- hey 2 questions
- what is the difference between a rolled up dimension and a black hole?
- Does a light shone from a hovering object outside of a black hole redshift?
- Can a black hole be produced from ...
- Supergiants
- perturbation theory, precession
- topology of universe
- what is the max speed of a spaceship travelling near a black hole?
- Carbon and Plutonium
- perception of sky colour reversal
- Stellar sized Bose-Einstein Condensate...
- Hawking Radiation Question
- A van full of budgies
- Question about upcoming year in science?
- ISS games
- Car on a Trailer/Plane in a boxcar
- Varying Speed of Light - What Do You Think?
- A Beginner Physics Book
- Are black holes cold?
- Venus' Orbit
- Random Jibberish About Bad Physics
- Roots/Exponents equation help
- Special Relativity Textbooks
- Question about Titan
- Rate change?
- How long can the Voyager 1 (and the other interstellar-space bound probes) last?
- Bose - Einstein condensate
- After reading the "Star of Bethlehem" threads here
- Are we the only planet relying on the sun?
- mars' past habitability
- Do Singularities have a tail?
- Hot cores...planets.