This artwork is from the Bronowski series. The entire image
including frame is 48" x 20.25". The main image
is taken from Correggio's Jupiter and Io c.1530. This
artwork includes a drawing of Galileo's (or equivalent) telescope
and the following text quoted from Jacob Bronowski's Ascent
of Man:
"Galileo was a short, square, active man with red
hair and rather more children than a bachelor should have...
When he heard the news of the Flemish invention... he thought
it out for himself in one night... He stepped the magnification
up to eight or ten, and then he had a real telescope... [Then]
to thirty, and he turned it on the stars. 'I have discovered
four planets, neither known nor observed by any one of the
astronomers before my time.' These were the satellites of
Jupiter.