The passage with the comet, coma, dust cloud, and all that fun stuff. If you don't remember the passage, there is a comet with a nucleus (as opposed to the gas and dust cloud surrounding it) composed of either rocks and gravel only, held together by its own gravity, or rocks and ice, held together by the ice.
What new information would help decide between the two models discussed in the passage?
B. Spectroscopic studies of the coma.
*C. Spectroscopic studies of the nucleus.
I couldn't think of any compelling reason to pick either one. I tried to intuit it with my crappy astronomy knowledge, but obviously came short.
What reason is there to pick C over B? Thanks.
What new information would help decide between the two models discussed in the passage?
B. Spectroscopic studies of the coma.
*C. Spectroscopic studies of the nucleus.
I couldn't think of any compelling reason to pick either one. I tried to intuit it with my crappy astronomy knowledge, but obviously came short.
What reason is there to pick C over B? Thanks.