Jacques Vallee, in his 'ANATOMY OF PHENOMENA', states: "H. Oberth, well known for his contributions to the early development of Rocket Technology and connected engineering problems had repeatedly claimed that UFO's are vehicles from another solar system. Others have also made this hypothesis, but are often in disagreement over the exact origin of the 'visitors'; the reader will often find the stars Tau Ceti and Epsilon Eridani associated with such speculations, simply because they are among the closest to the sun..."