The Sloan Digital Sky Survey
A) searches for planets around neighbor stars by looking for changing Doppler shifts in their spectra
B) searches for Trans-Neptunian objects, small icy bodies in the outer solar system, whose orbits sometimes resemble Pluto's
C) searches for supernova remnants that could have pulsars inside and then try to find the pulsars
D) takes images and spectra of millions of objects, to find the positions and redshifts of as many galaxies and quasars as possible
E) searches to see whether extra-terrestrial civilizations are sending any digitally recorded music our way
Section 28.4: The Challenge of Dark Matter

Question

Quizplus · Accepted Answer

The Sloan Digital Sky Survey takes images and spectra of millions of objects, with the goal of mapping the positions and redshifts of as many galaxies and quasars as possible.