Approximately what fraction of its main-sequence lifetime has the Sun completed at the present time (see Table 11-2,Comins,Discovering the Essential Universe,6th ed.) ?
A) about 1/4
B) less than 10%
C) about 1/2
D) about 3/4
Correct Answer:
Verified
Q160: A relatively fast star escapes an open
Q161: In terms of the mass and lifetime
Q163: What is the most important property of
Q166: Which statement about the rate of stellar
Q168: What is happening in a star that
Q170: How is the length of a star's
Q175: The stars that last longest are the
Q177: What major physical process is taking place
Q180: Thermonuclear reactions convert hydrogen into helium in
Q187: A star is observed to be on
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents