Why would an eclipsing binary be more valuable than an ordinary spectroscopic binary in accurately determining stellar parameters? (hint: consider the spectroscopic information here.)
describe three differences in the p-p chain and cno cycle for converting h into he in main sequence stars.
explain why type ia supernovae are favoured for determining distances to galaxies, how they could be distinguished from type ii supernovae, and explain at least one drawback in their use as standard candles.
list three observations that suggest that much of the matter in the universe is “dark.”
explain differential rotation of the galaxy and how it affects observations of the spectra of stars in the galaxy relative to an observer on earth.
why can’t an isolated white dwarf contract as it cools? what is its fate?

Study the image. which feature is modeled in the diagram? check all that apply. 1 a convergent boundary is formed. 2 continental plates are colliding. 3 two plates are forming a divergent boundary. 4 continental plates are sliding past each other. 5 several mid-ocean ridges are formed on earth’s surface.

Reason i shouldnt turn back if i'm lost in the wilderness need fast

Tone. one cool fact i found studying greek mythology is the connection to modern names. for instance, my hometown, east sparta, ohio, is named after the home of the awesome greek warriors! which revision of spencer's essay best uses a formal tone? one interesting fact i found studying greek mythology is the connection to modern names. my hometown is east sparta, ohio, which is named after the home of the fierce greek warriors. isn't it interesting how greek mythology connects to modern names? east sparta, ohio, for instance, is named after sparta in greece, which you know is home to the strong greek warriors. an interesting fact about greek mythology is its connection to many modern names. one example is east sparta, ohio, a town that takes its name from the home of greece's famous warriors. have you noticed how many modern names come from greek mythology? i didn't know until now that my hometown, east sparta, ohio, is named after the home