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For a low-mass star evolving off the main sequence, the _____ making the star _____.

The fusion of _____ is the trigger causing a core-collapse supernova in a massive star.

The gas in an emission nebula glows because it is excited by ______ radiation.

The time it takes for the Sun to go from its highest point in the sky until it is again highest in the sky is a Solar Day. What is the day defined by the rotation of the Sun compared to faraway background stars?

Which of the following is NOT a property of neutron stars?

Supernovae affect life on earth by

The scientific model to explain X-ray bursters involves matter being sucked from a companion star onto an orbiting neutron star. This is similar to the process that creates what other event?

13. When a work has three or more authors, what is the correct format to use for the authors’ names in the in-text citation?

6. What dictionaries should you consult to determine the spelling of words in APA style papers?

12. When citing multiple works by the same author in parentheses, how many times should you write the author’s name; in what order should you place the citations; and what punctuation mark should you use between the citations?