Mercury's magnetic field is generated by the same dynamo effect as Earth's.
Indicate whether the statement is true or false
Question 2
If an object doubles its luminosity in 10 hours, how large can the emitting source of light be?
A) about 10 light-hours across
B) about 10 parsecs across
C) about 10 light-years across
D) varies depending on how luminous the object is
E) varies depending on how far away the object is
