Saturn's moon named ______________ is the second largest moon in the solar system
Fill in the blank(s) with correct word
Titan
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The angular measure in degrees north or south of the celestial equator is called _______________
a. declination b. azimuth c. altitude d. latitude
Suppose a particular star has a core that is undergoing several stages of fusion simultaneously, as shown in this diagram. Based on our understanding of stellar lives, the mass of this star is probably
A) greater than 8 times the mass of the Sun. B) about 2 times the mass of the Sun. C) about the same mass as the Sun. D) less than 0.1 times the mass of the Sun.
How does the declination of the Sun vary over 1 year?
Which of the following best describes a set of conditions under which archaeoastronomers would conclude that an ancient structure was used for astronomical purposes?
A) The structure has holes in the ceiling that allow viewing the passage of constellations that figure prominently in the culture's folklore, and many other structures built by the same culture have ceiling holes placed in the same way. B) They find that, looking out from the center of the building, there are two windows that align with the rise and set points of two bright stars. C) The structure has 29 straight lines pointing out from a center, just like there are 29 days in the lunar cycle. D) The structure has the same dome shape as modern astronomical observatories.