The critical temperature the core must reach for a star to shine by fusion is:
A) 5,800 K.
B) 11,000 K.
C) 127,000 K.
D) 10 million K.
E) 100 million K.
Question 2
Our best close-up views of the jovian moons came from the many passes by:
A) Voyager 2.
B) Galileo.
C) Cassini.
D) New Horizons.
E) Global Surveyor.