Stella and her brother Max, of the Brite and Brite Detective Agency, put the mystery of Mayor Pickle's missing Pekingese on hold as they join the astronomy club in researching the problem of invisible dark matter in the universe.
the hunt for dark matter and dark energy in the universe
Gates, Evalyn
2010
Explains some of the progress being made by scientists seeking to understand the composition of the universe, and looks at how Albert Einstein's theories are proving useful in the quest.
