Luke was excited to give his speech about space tourism. he conducted a lot of research about space technology and current spacecraft manufacturers who were beginning to get into the space tourism business. he began his speech with the question; "did you know that a white dwarf star is the weight of the sun, but has only the diameter of the earth? a cupful of white dwarf material weighs 22 tons! " then he went on to develop his credibility and preview his points about space tourism. why was his audience likely confused by this attention getter?