Ages 13-18; Gr.7-9.
Thousands of years ago, humans believed that Earth was the center of the universe, that the world they lived on was all there was. Truthfully, the solar system extends almost halfway to the nearest star. And it is composed of not only planets, asteroids, and comets, but also powerful forces and vast fields of energy. This is our solar system's big backyard. The cold, dark world that lies at the farthest reaches of our solar system holds a vast collection of secrets, and for most of human history, we had no idea anything was out there. But, driven by curiosity and equipped with new technology, astronomers have determined that beyond the orbit of Neptune are countless icy comets, strange particles that dance under the influence of the sun, and signs of undiscovered planets.

Lexile measure IG920L; Ages 9-12; Gr.4-6.
In this beautifully illustrated book Dr. Allison K. Rodgers simply explains everything from why we have periods to sex and consent in the age of social media. You'll learn the correct names for everything, realize pubic hair is TOTALLY NORMAL, and discover the magical self-cleaning properties of vaginas.

Ages 7-9; Gr.2-4.
Lurking at the center of our galaxy and in the farthest reaches of space are black holes. Once unseeable and unknowable, these cosmic devourers--sometimes born from the death of stars--swallow even light itself. What exactly is a black hole? And how do we even know they exist? In a kid-friendly, rhyming narration, the elusive astronomical object introduces itself as both a behemoth star-eater and a shy, rarely-spotted phenomena.