Multiple Choice
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
Correct Answer:
Verified
Correct Answer:
Verified
Q9: Some astronomers searching for what the mysterious
Q10: When astronomers have examined rich clusters of
Q11: How do astronomers currently think the amount
Q12: Why do galaxies collide, while stars almost
Q13: According to our modern "bottom-up" model of
Q15: There is some irony in the fact
Q16: When astronomers say that the groups of
Q17: Which of the following does NOT happen
Q18: An astronomer is observing a distant galaxy
Q19: According to our current understanding, giant elliptical