  The ancient priest-astronomers constantly watched many heavenly bodies. The
record about Halley's Comet of 1682 A.D. has been decoded completely. Good
agreement between it and the results of European astronomers is seen. The
records about Halley's Comet of 1835 A.D. as well as about the sun, the moon,
Mars and Saturn have been deciphered as well. The obtained information is the
basis in order to understand some aspects of the bird-man cult.
