Answer questions like ...

1. The intensity of light coming from a blackbody peak at a wavelength
2. About how long does it take for sunlight to reach the Earth from the Sun?
3. Which of the following properties is special to light and not true of other types of signal such as sound or seismic waves?
4. What planet did comet Shoemaker-Levy 9 collide with in 1994?
5. Stars like our sun have low-density gaseous atmospheres surrounding their hot, dense cores. If you were looking at the spectrum of light coming from the sun (or any star), which type of spectrum would you see?