The most common type of star is a

What is the Roche limit as it applies to objects orbiting planets?

Which of the following is a way that a star can explode to make a supernova?

Which of the following approximately describes the distance technique called spectral parallax for measuring the distance to stars?

Given the formula m – M = 5logd – 5 what is the distance to a star with an m of 5 and an M of -5? (d is in parsecs)

Which of the following statements about star clusters is NOT true?

Some stars fuse helium to carbon in their core. Why doesn’t the Sun do this?

Eclipsing binary stars are useful tools for determining the mass of stars

The image below shows a light curve from a variable star. Use the graph to answer the following questions. The x-axis is the time in days. What is the period of this star’s pulsation?  Based on the period, confirm (or not) that this is a Cepheid variable?           Where would you find this variable star on an HR diagram? iv) When will the next maximum occur? 

Short Answer Questions Answer the following five short-answer questions in complete sentences.