 Complete the following phrase:  In 430 BC, the army of Sparta looted Attica for a second time, but Pericles was not daunted and refused to revise his initial strategy. Unwilling to engage the Spartan army in battle, he again led a naval expedition to plunder the coasts of the Peloponnese, this time taking 100 Athenian ships with him. According to Plutarch, just before the sailing of the ships an eclipse of the sun frightened the crews, but Pericles used the astronomical knowledge he had acquired from Anaxagoras to calm them. In the summer of the same year 