A matter of small and big numbers
Having mentioned the difficulty of finding the distances to stars last week, our astronomer tries to put some unfamiliar numbers within your grasp.
Our astronomer steps out of his area of expertise to comment on biology.
One of the advantages of living in the Washington, DC area is the wealth of cultural opportunities. Expositions of science, history and the arts are going on all the time. Our astronomer attended one of these recently, telling the story of how multicolor imaging allowed scholars to read a text that had been erased centuries ago.