Thursday, March 15, 2012 8:15:02 PM
Hummm, a really quick look at Wiki suggests 1600w at the top but around 200w at sea level. Not sure if that's the same as what we`re talking about though.
No, it isn`t. That graph shows the different energy levels of different wavelengths of electromagnetic radiation from the sun.
The key word to look for is "insolation", but note what units you`re looking at. Some sources quote watts per hour per square meter (either peak, i.e. midday on midsummer`s day with a clear sky, or averaged over some period of time, usually a month), some sources quote watt-hours per square meter per day.
Thursday, March 15, 2012 9:47:18 AM
Cajun247-"On top of which you're suggesting hitting a penny (or dust spore more likely) instead of a bowling ball from miles away."
Well, seeing as we`ve already landed craft on asteroids*, getting to one has proven possible.
*Near Earth Asteroid Rendezvous (NEAR): launched in 1996, landed on Asteroid 433 Eros 2/12/2001. Hayabusa: launched 2003, landed on asteroid Itokawa 2005,
Moving one is just a matter of physics. There have been several theorys, including: -using a `tug` vehicle pulling the rock via a cable connected at the rotational pole, -de-spinning a rock, attaching a thrusting engine situated so that it thrusts through the center of mass and is gimbled to control the rock`s orientation. (both of these were researched by Proffessor D.J. Scheers & Apollo 9 Astronaut R.L Schweickart in 2004 and found viable).