Thermonuclear reactions convert hydrogen into helium in the core of a star during which phase of a star's life?
A) main-sequence phase
B) protostar phase
C) horizontal-branch phase
D) as the star moves up the red giant branch for the first time
Correct Answer:
Verified
Q175: The stars that last longest are the
Q176: The definition of a main-sequence star is
Q177: What major physical process is taking place
Q178: If the universe is only 14 billion
Q179: All stars on the main sequence
A) generate
Q181: When the Sun entered the main sequence,
Q182: The main-sequence lifetime of a star with
Q183: The spiral galaxy of which Earth is
Q184: Main-sequence stars can be divided into those
Q185: The star Zeta Pegasi (in the constellation
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