In essence,most of the extrasolar planets discovered to date have been found by
A)closely examining very high-resolution photographs of other star systems.
B)observing a star carefully enough to notice that it is experiencing a gravitational tug caused by an unseen planet.
C)identifying spectral lines that look like what we expect to see from a planet rather than a star.
D)observing mini-eclipses of a star as an unseen planet passes in front of it.

Question

Quizplus · Accepted Answer

The Answer of In essence,most of the extrasolar planets discovered to date have been found by
A)closely examining very high-resolution photographs of other star systems.
B)observing a star carefully enough to notice that it is experiencing a gravitational tug caused by an unseen planet.
C)identifying spectral lines that look like what we expect to see from a planet rather than a star.
D)observing mini-eclipses of a star as an unseen planet passes in front of it.

In Essence,most of the Extrasolar Planets Discovered to Date Have