People often see foreign-objects fly across the sky. Are those objects satellites? Are they meteorites? Or is there something else in outer space? Read to find out more about UFO sightings.
Meet Twig - a new kind of explorer. Travel with him deep into the forest, where discoveries are there to be made. Surprises lie around every corner. Who knows where the unidentified might take him...
This book introduces readers to famous UFO sightings, revealing what the legends claim, some possible explanations, and what people still don't know for sure. Short paragraphs of easy-to-read text...
In Unexplained: Aliens and UFOs, readers in grades 5-9 will explore UFOs and the possibility of alien visitations. Readers are encouraged to use their imaginations and reasoning skills as they...
