Author Question: The depth of the dip in a star's brightness due to the transit of a planet depends most directly on ... (Read 20 times)

iveyjurea · **on:** Jul 27, 2018

The depth of the dip in a star's brightness due to the transit of a planet depends most directly on

A) the planet's density.
B) the eccentricity of the planet's orbit.
C) the planet's size.
D) the size of the planet's orbit.
E) the planet's mass.

Question 2

(From a science quiz that appeared in the weekly magazine The Economist.) Economic history is easier to write than the history of the universe. Nevertheless, most cosmologists now think that when the universe was formed,

A) first there was a Big Bang. There has not been any inflation yet, but if it comes it will cause recession.
B) first there was inflation, which caused the Big Bang, then recession.
C) first there was a Big Bang and then inflation (of space) which caused recession (of all matter, away from the Big Bang).