1.   It is not that Western tradition has been wholly free of references to celestial phenomena.

2.   There was assumed to be a counterpart in human events to every celestial phenomenon.

3.   And those are just the celestial phenomena that are already known.

4.   At least three are required to carry out observations of stars, galaxies and other celestial phenomena.

5.   Lu, a Hubble Fellow at Caltech, said the team did not actually see the object, only its signature written in the light of another celestial phenomenon.

6.   Nor is it some entirely new celestial phenomenon.

7.   Others, including scientists Alan Hale and Tom Bopp of Hale-Bopp comet fame, will explain the celestial phenomenon aboard cruise ships.