MAXING OUT

Sometimes, you need a big screen to go super-small. The huge LeFrak IMAX Theater at the American Museum of Natural History is playing small ball with “Mysteries of the

Unseen World,” a view inside the intricate, but basically invisible, microorganisms around us.

The film, which opens Friday, blends computer imagery, electron microscopes, NASA visualizations and 3-D cameras into 40 minutes of mind-bending images.

Narrated by Forest Whitaker, “Mysteries” illuminates four distinct types of secrets hiding in plain sight at a family’s New Orleans apartment, on their sloppy dog and at a nearby park.

“Mysteries,” was designed for seventh graders and up, but viewers of all ages will want to get up close with slime molds, a snail’s tongue and a flea’s face.

“Mysteries of the Unseen World” runs from Friday through June at the museum, 77th St. and Central Park West. Admission, which includes general admission, is $27 (adults), $22 (students/seniors), $16 (children 2-12).