Back to Astro 103 main page
### MATERIAL FROM CLASS:

Powers of ten, measuring angles, metric units (pdf)
Using ratios to simplify your life and your calculations
Why Pluto is no longer considered a planet (by some)
Significant figures:

Speed of light c = 2.977 924 58 x 10^{5} km/sec;

Solar power output 3.8 or 3.9 x 10^{26} W (that's all we know)