1. The discovery of Charon (see Figure 9-5) was made by an astronomer at the U.S. Naval Observatory. Search the Web to find out why the U.S. Navy carries out work in astronomy.  Figure 9-5 2. Search...

1. The discovery of Charon (see Figure 9-5) was made by an astronomer at the U.S. Naval Observatory. Search the Web to find out why the U.S. Navy carries out work in astronomy.

 Figure 9-5

2. Search the Web to learn whether there are any comets visible at present. List them. What constellations are they presently in? Are any visible to the naked eye? (Recall that the unaided human eye sees objects brighter than about sixth magnitude.)