Author Question: In essence, the Kepler mission searched for extrasolar planets by ________. A) observing a star ... (Read 52 times)

jazziefee · **on:** Jul 27, 2018

In essence, the Kepler mission searched for extrasolar planets by ________.

A) observing a star carefully enough to notice that it is experiencing a gravitational tug caused by an unseen planet
B) identifying spectral lines that look like what we expect to see from a planet rather than a star
C) monitoring stars for slight dimming that might occur as unseen planets pass in front of them
D) obtaining high-resolution photographs of other star systems

Question 2

Relative to the age of the universe, how old is our solar system?

A) It is about 1 as old as the universe.
B) It is about one-third the age of the universe.
C) It is nearly the same age as the universe.
D) It is between about 5 and 10 as old as the universe.