Some of the key themes that astronomers hope that Suzaku will be
able to advance are:
When and where are the chemical elements created?
Suzaku can probe the amount of oxygen, silicon, iron and other
elements in nearby stars, supernova remnants in our Galaxy and its
neighbors, and in distant clusters of galaxies.
What happens when matter falls onto a black hole?
Suzaku can measure the velocities of matter around a black hole
in a binary star system, or at the center of a galaxy. Can we prove
that these are indeed black holes, as predicted by General Relativity?
How does nature heat gas to X-ray emitting temperatures?
Maybe the sensitive measurements the Suzaku will help
scientists explain how gases are heated to X-ray temperatures in
the corona of a star, or how (how much) cosmic ray particles are
accelerated in young supernova remnants.