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According to Newton, the gravity of the _________ is needed to explain planetary orbits.

Adding a secondary concave lens of carefully chosen different glass to the primary lens on a refractor allows

The separation of red and blue light in single-lens telescopes is called __________ aberration.

A total solar eclipse will only occur when the new moon is both on the ecliptic and at its greatest distance from Earth.

According to Chapter 3, it is always better to have an explicit thesis statement rather than an implicit thesis statement. 

This is a hybrid course in which all deadlines and due dates are posted for assignments and assessments with a specific time for submission. Do you confirm your knowledge and agreement with the following rules? Any assignment (quiz, lab report, homework, etc.) not submitted on Canvas on time in the appropriate format asked will not be graded. Assignments emailed to the professor will not be graded.    

According to Chapter 3, what should always be included within the introductory paragraph?

The simplest telescope design is the prime focus reflector.

Do you have any ACCESS Accommodations for this semester that I should be informed of?   

The largest reflector, the 10 m Keck, gathers __________ X more light than the largest 1 m Yerkes refractor.