Scientist Looks To Stars For Answer On Caesar Back in 55 B.C., Julius Caesar invaded Britain. He kept a detailed record of his journey, straightforward enough for Latin students to read today. But in that record, Caesar failed to mention the actual date of his landing. It's a puzzle that's had scientists and historians duking it out for centuries. Now, Texas scientist Donald Olson thinks he's got the answer. He explains how the stars aligned to shed light on this ancient mystery.