A spacecraft has captured and brought material to Earth from a comet.
Indicate whether the statement is true or false
Question 2
If a star was the same size as our Sun, but was 81 times more luminous, it must be
A) twice as hot as our Sun.
B) three times hotter than the Sun.
C) four times hotter than the Sun.
D) nine times hotter than the Sun.
E) 81 times hotter than the Sun.
