Book Two in the best-selling Uncle Albert science/adventure series.

Uncle Albert and his intrepid niece, Gedanken, make some astonishing discoveries when they set out on their next mission: to investigate the universe...Discover, in this adventure story set in deepest space, black holes that swallow up everything, tape measures that shrink when you take them downstairs, speeded-up time, and how it is that you are made of stardust.