A Step Across the Cosmos by Kenneth Anderson
Hazyl and her twin brother, Vergyl, had no idea what their scientist father had been working on. But one day, prompted by an uninvited visitor, they discover an entire laboratory in their house that they never knew existed.
The lab doesn’t even compare with the real discovery, though!
What they find in the lab is about to take them to places no human has ever been; but it will also challenge them in ways they could never predict.
Join 12-year-old twins Hazyl and Vergyl, and their amazing pet from another world, Flipflop, as they step onto exciting new worlds in search of the children’s lost father. Along the way, they will see amazing sights, meet new friends, and display loyalty, compassion, and teamwork while overcoming incredible odds.