31 Jan '06 20:18>1 edit
Originally posted by sasquatch672Check my profile for a hint on what my current line of thinking is. 😛😀
Hal -
Gravity can be measured in outer space. Come on man - it's the science at work behind the discovery of the planet that started this thread in the first place. One way of measuring gravity is how much light is deflected by a body's gravitational field. I also see that you've done the very thing I said you do - you say, "Well, can you say con pissing him off a little bit? I'll bet that tsunami a few years ago was your fault.
I agree with quite a lot of what you say. Here are a few points of contention though:
So if God wants you to have faith, and you go around trying to prove His existence, don't you think you'd be pissing him off a little bit?
I wouldn't label my intention on this thread as an attempt to prove the existence of God.
One way of measuring gravity is how much light is deflected by a body's gravitational field.
Indeed, but I'm sure you'll agree with me that this isn't hard-science. Astronomy IMO, would fall under what is considered soft-science: e.g. it is hardly possible to set up a control specimen to ascertain that gravity (or whatever it is being measured) is the only factor affecting the measurements. Astronomers observe the nett result of whatever happened out there in space and work from there. It is my humble opinion that it is not possible to accurately measure the distance of stars over a couple thousand light-years away. Stellar parallax can only allow for so much measurable difference.
For distances above a couple thousand light-years, astronomers use a large variety of methodology to measure stellar distance, amongst others: the inverse-square law of light, stellar motions, moving clusters, the Period-luminosity relation etc, etc.
Even Stephen Hawking notes in his "A Brief History of Time" Ch3, (I'm paraphrasing): For most stars, there is only one characteristic feature that we can observe – the color and brightness of their light.
It is these two aspects of star light that astronomers apply in their measurement of these great "million light-year" distances. How on earth could they be accurate if the light has to pass through millions upon millions of miles of space, being affected by gravity, black holes, dark matter, gravitational radiation, and all the other "unknowns" of the universe? It is my uneducated opinion that these results are the best they can do, but it's hardly accurate beyond question. (In case you missed it, I'm fighting for middle ground, here)
I hope you found some sense in my unintelligible jabbering.