- Can material actually reach the event horizon?
- Increase in Solar Constant as cause for Global Warming?
- Question about Big Bang
- Gravitational Collapse of Dark Matter Halos
- Field rotation in alt-az-mounted telescopes
- saturn ring is nothing more but crashed planet onto saturn?
- What happened whith the solarsystem when..
- Solar Minimum
- How do you pronounce Fomalhaut?
- Expansion rate and age of Universe
- To alter the Sun
- Space Simulation
- Bombs in space
- Which one?
- Ideas needed -- will you contribute?
- Is the messenger spacecraft in strong sunlight now?
- Just saw nova's "The Ghost Particle" and i have some questions....
- What Time is it on the Moon?
- Phobes is falling down
- Actual distance in (AU) earth sun
- I am new to Astronomy and need help understanding some information....
- Phase angle and Illumination
- LCD Monitors and cold
- Natural Time Machine
- Sunheat on the Moon and on mars
- Are special relativistic coordinates meaningful on cosmological scales?
- The momentum of light
- Anybody who knows about the star 70 virgo?
- How many stars can the unaided-eye see?
- Accelerating towards C
- 23.5 degrees
- How long do these things survive in space?
- Questions on Light and Energy
- Dyson Sphere Inside / Ringworld Outside
- The Sun as an Average Star ...
- Guns in space?
- Mass to light ratio of the Milky Way?
- why all items in the sky looks round and plane in shape
- Why is a nearby supernove (far) overdue?
- Islamic calendar(s)
- Possible to freeze light? And question about spectrum
- Moore's Law
- Have Ray Guns been invented?
- Mapping the Known Universe
- Doppelganger
- Imperial measures
- Expansion of Distance Between Galaxies Question
- answers in astronomy
- photons collide?
- What is the oldest reference...
- Neutrino thread/Back to basics/questions/answers
- the sun like stars are compressed by any other third power
- What is the limited magnitude of stars visible with unaided eyes?
- the bomb on phobos
- simple physics
- How will it look when you are passing the earth with the speed of light?
- Katrina storm surge vs atomic explosion
- Please explain geostationary orbits?
- Before the sun
- Skyywatcher
- Difference size of disk between Sirius B and Barnards star
- The Sun from afar
- Interstellar matter & the absorption of starlight?
- Galaxies.....
- What’s the holdup on the Shuttle Replacement anyway?
- Why not the Moon and Mars by 2020?
- Pojmanski's Blue
- G dwarf luminosity
- Moon rotation
- Sublimation of ice
- How can objects have different rotations at equator and poles?
- The big bang and absolute time
- My question about weight distribution on earth
- Why is finding Mercury in the sky so difficult
- What is the Earth's weight referenced to?
- Throwing a Frisbee from Orbit
- Could life adapt (evolve) to survive a vaccum?
- Simple enough question...
- I'm Trying to Design a COMPLETELY Unbiased Measurement System, Any Suggestions?
- Is this possible?
- Why does the moon's terminator not appear orthogonal to the direction of the sun?
- The shape the Earth is in
- Moons and their orbits...
- Space elevator questions
- is earth shining more than the previous?
- how many dimensions?
- Enceladus' orbit
- when everything stops...
- What would be undeniable proof of the existence on extraterrestrial life?
- EM radiadion
- Pressure and gravity in general relativity
- possible to see Flag on Moon?
- Where does sound come from?
- Pluto
- Black holes
- Why do we explore space?
- Swimming on Enceladus.
- Tunneling
- Reionization Basics
- New WMAP data - impending release?
- Black Holes and Galaxies
- Mars vs Titan - Atmosphere
- how does radiation effect our bodies
- Elements unique to the Earth
- Are there any instance of seismic activity on moon?
- Why does the Earth always look the same?
- Black matter… the greatest fallacy?
- Black Holes in orbit around the Galaxy
- Question about Supernovae
- Dark Energy's effect on the curvature of space time
- Where is the "Bang" in the BBT?
- Retrograde
- COBE map?
- How big is the Universe
- Black hole and the velocity of light
- Doppler redshift in a vacuum requires physical source
- Photons and gravitons
- why a 50% asymmetry in the matter?
- Black Holes & Accelerated Expansion
- Are Alpha Centaurians Watching Seinfeld Reruns As We Speak?
- "sand" is possible on moon ?
- are ISS crews travelling seconds into future?
- What can i expext to see of Cygnus X1 with my telescope?
- Seeing God with the most powerful telescope?
- The Answer to What Is The Big Bang...
- Moon Conjunction
- Celestial Equations.
- Universe expansion question
- Nearest quasar?
- My Simple Questions.
- Redshift and blurring
- Would doing this get you out of a black hole?
- Hidden Planets
- Is there a connection between Momentum and Entropy?
- What does Lorentz contraction do @ 14 Bly?
- HD,SAO or HIP number of supernova candidate star Rho cas
- When you go all the way up in space, you return back?
- Light slit experiment - explanation
- Planet question
- 2020
- Jumping on earth in comparison with jumping on the moon
- Closed timelike curves
- Orion Nebula and Earth-like Planets
- What did Buzz Aldrin say to Houston?
- Mysterious green light?
- Will a relativistic cannonball forever see the galaxies flash past?
- What is a K5 and a K2 type of star?
- Satellites
- Geschwindigkeit
- when stars get really old and become cold, are they just planets?
- :question:How mass increases
- Image embargo
- Is it REALLY impossible to tell?
- How would a Geocentric appear different?
- can energy converted into mass ?
- UK Manned Spaceflight?
- how many?
- Help wanted
- daytime 7 min longer than nightime on the day of vernal equinox.why?
- Space missions - technical data & total expenses
- 'Solarscope' brand solar observing system
- The Sun's future
- Olber's Paradox
- Quasar proper motions?
- What does W = -1 mean?
- How will look a total solareclipse on the Moon?
- Why can't we travel at the speed of light?
- Could the Earth have 2 moons in the future.
- How Big is the Antlia Cluster?
- Objects or asteroids between Mercury and the Sun
- what is the limit?
- particle physics question - Lake Geneva and the TGV
- What am I seeing? Strange light in the sky.
- Quick Question - Moon is not a moon.
- Milankovitch cycles
- Is Pioneer 10 reaching the red giant star Aldebaran in the (far) future?
- Volume of the Universe
- Not a real astronomical question
- What did I see?
- Concerning erecting lenses compatibility
- Photo Print Paper / Pinhole Camera
- Polaris (pole star) a good candidate for a life harboring planetsystem?
- Surface Temperature on Venus
- Excuse me?
- Dark Energy question
- Can I ask you a question?
- How does the curvature of space affect travel?
- consevation of energy
- I am trying to find an (online) starcatalog of HD,SAO
- The ultimate thread about photons (questioning the basics)
- Time Dilation & Heat
- Earth spinning, is there any big change?
- Why is Sirius appearing blue in the sky?
- Give me your best guess
- What is the second well known white dwarf?
- Do you think that astronomers will find the same planets outside the solar system?
- How will it look when we can see stars with a limit of magnitude 8,5?
- What kind of star was the supernova in the Crab nebulae before its explosion?
- Q about Moon landing.
- bend space without altering time?
- When Does Atomic Recoil Occur?
- Naming Alien Species (formerly: Uh guys?)
- In which constellation can i find Barnards star?
- Comets for 2006
- Big Bang
- Question about Colliding Planets
- Earth-like humans?
- Neutrino thingy.
- Whats the fastest man made thing?
- How does radiation escape from a black hole?
- telescope question.
- Looking For Fast Galaxies
- Cooperation between US and Russia: Joint Mars Missions
- Venus's surface temp with Earth-like atmosphere?
- LM and CSM flight paths
- Human Evolution on Mars +3000 years
- What are the (largest) stars known?
- is my ccd dead
- laws of universe
- Is this possible?
- Reference frames in general relativity
- Planet Rotation Speeds
- How a hammer works on moon?
- What's about the moon?
- When Betelgeuze explodes as supernova ,will it be visible at midday?
- What is the Definition of "Woo Woo"?
- When galaxies collide, and SMBH
- Speed of light and the Doppler effect
- Deformation through relativistic rotation.
- The Universe defined?
- Cause of Doppler redshift
- Moons of terrestrial planets
- What happens at the singularity of a BH?
- Hypothetical Query
- Space Telescopes
- is warp drive possible?
- returning rays on the earth cause global warming?
- Comparison of brightness of a star
- In Bound Black Hole - Hypothetical
- Tranuranic elements
- How many gallons of gasoline in a barrel of oil?
- Oceans In Gas Giant Planets??
- Torch Orbit Vistas
- Flat Earth Society and Apollo to the Moon
- Compact stars
- if moon covers with mirrors on its surface
- Rare earth nyodymium magnets
- Plasma
- Limit of magnitude of faintest stars in space
- Our understanding of the universe?