- Light - reflection
- Is there a maximum mass/ radius for a rocky planet?
- The Universe's North Pole?
- Extremophiles?
- Aviation design question
- Energy to mass?
- Light constant math formula ?
- Introduction
- Significance of lithium in solar twins
- Surfer TOE
- Highest Altitude Without Pressuresuit
- Curve-fitting astronomical data
- galaxy hitchiker
- Ouch!
- Photon's Momentum
- Arrangement of Neutrons and Protons in the Lithium Nucleus?
- Ionizer
- why not the simple fix... Gravity.
- why not the simple fix... Gravity.
- Garrett Lisi's E8 Lattice Unifying Theory of Everything
- Juneau a good aurora question?
- Where would Apollo 13 be today if crew had died?
- Introductions forum
- Energy Density more than Lambda
- Galaxies
- Space-related Insurance Policies
- Why might Iapetus' leading hemisphere be dark?
- moon's rocks are soft or thick like our earth's rocks?
- Sunspot color
- Rest mass
- The Invasion of Mars
- What surprises would a gravity particle have w/ it?
- RA-Declination --> Sgr A*-oriented X/Y/Z coordinates
- Space elevators
- Synchrotron radiation from comets?
- Query on the Moon/Earth and the orbits of Mercury, Venus and Mars
- Gas Temperature on a Blackhole
- I smell a rat, do you?
- If we're all alone
- Software which runs satellite and rockets
- Nasa 5.0
- About the electromagnetism
- Moon question
- Question on the idea of outer space
- Where are the others ?
- Feeding Black Hole
- (Moons of Moons) Someone had to have asked this
- very bright star in the halo of the moon?
- If our sun going to become a white dwarf
- What does the universe look like?
- Build a satellite in your backyard
- Age of 26 Draconis ?
- Lifespan of Platetectonics?
- Cars running on water?
- If humanity was suddenly killed
- Rotation of objects in the universe
- Aviation question on gasoline octane
- Parallel Universes
- How to build a solar sail; easy...?
- Twinkle twinkle
- ISS leak visible from the outside??
- Has Spitzer looked at Alpha Centauri?
- Escape velocity.
- Variable Stars
- Has anyone ever observed a lunar asteroi/meteor strike?
- Origin of the Big Bang
- Special Relativity
- Casimir demonstration?
- North of Orion tonight
- where did it all start
- Parallel dimensions?
- square root of a negative number
- Saturn and "pinging noises"
- Entangled photons and wave-particle duality
- supersonic velocity in space
- cataclysm!, d.s. allan, j.b. delair
- Dumb question w.r.t Mathematics and Nature
- How do you clean a Quartz Window?
- Introduction Forum (I think?)
- the density of atoms in space
- Light Inside a Black Hole
- A question about gravitational energy and its role in an accelerating universe
- Photon Wavelength
- I have a question on sun
- Thought excersize seems to break the speed of light?
- Why So Perfect???
- Need Major Help On A Couple ?'s-please Respond
- Star viewing software or website?
- Surface of Saturn
- Neptune
- Numerical Integration
- Forming Heavier Planets
- 3% of the universe?
- Astronomy Colleges
- Gas Clouds in Space
- Radiation pressure
- Transmutation: us vs supernovas
- Bose-Einstein condensate
- Another BB question
- Can Ions have temperature?
- Dark Stars?
- Can temperature go up and down infinitely, or is there a limit?
- Does the energy expended by the moon vary?
- The End of the Universe
- Just saw something strange
- Thought provoking question- who can answer?
- Geminid
- Extra Solar North/South
- Does this qualify as an electrical current flow?
- Spinning round planets, using planets as slingshots and crashing into a planet...
- Is thermal energy re-transmitted in the same buckets?
- it couldnt ever fall because it would be all around the world????
- Apollo TV cameras
- Unknown LEO space machines
- Astronomers find a new halo for the Milky Way
- Regarding the Mechanics of Photon Absorption/Emission
- How Does Acceleration Affect Orbit?
- Black Holes question
- A relative speed of light problem?
- About traveling at the speed of light in a car with the headlights on...
- About traveling at the speed of light in a car with the headlights on...
- Correlation functions and power spectra
- Is this correct and can the area be found?
- Gravety wave strong enough to be infinit
- Galactic frames of reference
- Has anyone read this paper?
- Magnetic ropes and knots
- Smokestack turbines
- Need to calculate planetary positions in the future
- Two questions about the salt in the sea, and the comets which brought us water.
- Expansion Vs Crunch
- cosmic microwave background radiation
- What is the local effect of Lambda/DE on orbits?
- ?...
- Questions my small brain can't deal with:-)
- How far is far enough?
- This one should be easy... I hope
- Earliest sunset
- Gilese 581 d landing/taking off?
- How much heat does it take to make a (neon tube) plasma?
- Europa's surface temperature
- Sun/moon viewer
- Gas planets, why no surface?
- Auroras and substorms
- Gravitational mass = Inertial Mass?
- Angular diameter
- GRB Orphan
- Position from theta & rho
- homemade observatories
- A Question About Orbits.
- Keeping Neptune in orbit
- A Light Question More For Photographers Than Physicists
- Black Hole Explanation
- The shape of a black hole
- White Holes the other end of a black hole?
- Mass and speed.
- Where to Read Up
- Giving New Horizons a bomb
- The Asteroid that May Hit Mars
- What caused the water to apear on Earth?
- So does universe infenate?
- Solar system graphics.
- What is the point of other planets?
- Can you join 3D space at random points, without a wormhole?
- Bound vs. unbound electrons
- Antimatter Physics
- Maximum planets in a solar system?
- Visible Universe
- What's the maximum size a planet can get?
- Saturn
- How did the Big Bang manage to...bang out?
- Need material on earth mass decreasing.
- Black holes...
- Supernova video?
- Speed of Light Q's
- The double split experiment: How do they know that the one particle is in two...
- Spin Time
- Yet two more questions about "Time"
- Apollo landing sites erased?
- Hot Jupiters
- The Terraforming of Mars
- Orbiting with one pole facing away from the sun
- Planet FYZ
- 96% of the universe is missing, or is there Variable Gravity?
- satellite on sun-synchronous polar orbit
- Quark particles
- Sooo ... how old is this place???
- Software for astro calculations
- Why does Venus rotate differently
- Effects of Heat in Space minus any Gravity
- Do black holes have an absorbtion rate?
- Dot-matrix message visible from ISS/Shuttle?
- Source of heat inside Enceladus?
- Halo over Devil's Head
- Streams of Matter in Interstellar Space
- Questions about the LEM's camera during touch-downs
- Where's Io's water?
- Magrail launcher cost and completion estimates?
- Question about the Safety of the Large Hadron Collider
- Perihel of Earth in 2008?
- How does gravity work?
- How much mass can a cubic meter have?
- Preons
- Weird light
- Quadrantid Meteor Shower
- Never Dark
- Cosmic baryons, BB nucleogenesis problem
- Time Dilation, Perhaps not the Same Old
- Weightlessness Question
- Tetons Meteor
- What's going on out there?
- Equivalence Principle/relationship between gravitational and inertial masses
- Vanishing Stars
- Dark Matter and Strings, two widely accepted theories that cancel eachother out?
- How Solid is String Theory?
- A nuclear trivia question
- Buying Meteroites
- What were these shining lights in the sky?
- Shuttle (de)orbit calculation question
- Earth Tides and Earthquakes
- How does size affect gravity?
- If there were no humans
- Can Radar be used to determine Sun's distance if it's not a solid mass?
- Hit the brakes or the Accelerator!... Make up your mind!
- Questions about approaching the speed of light
- This is probably stupid but... universe expansion acceleration.
- Saw a UFO
- Solar radiation pressure measurement from earth's surface
- Periphelion
- Solar Storms
- Aviation history question on in-the-wing engines
- How do multilple particle waves interact?
- Is this description of a Black Hole correct?
- Big Bang Reasoning
- Asteroid TU24 close?
- LHC vs SSC
- The night before Tunguska, 1908
- Non-Euclidean Geometry
- Would you turn into a black hole if...
- Why Is The Speed of Light the Fastest Anything Can go?
- Q & A: Using a superfluid to slow light
- Rows of three objects
- Could space expand faster than the 'space distance' between matter.
- interstellar dust
- Comet Holmes orbit paramters
- Transit Of Venus
- Galaxy formation
- Magnetospheric plasma propusion
- UFO Sighting: Help me to identify this! (PHOTOS!)
- Looking for thread on BRI.