Do Aliens Visit Earth?

People around the world say they have met beings from outer
space. Do these close encounters prove aliens exist? The Into the
Unknown series probes the mystery with Do Aliens Visit Earth? The
investigation begins with early reports of alien contact and takes
readers through decades of unexplained events. Believers present
their stories while skeptics seek out the evidence behind the most
famous cases. Full-color images and fast facts add to the story. A
timeline traces alien abduction's history while a glossary explains
important terms. Reading and viewing suggestions point the way
for anyone interested in learning more.