The solar system most of us grew up with included nine planets, with Mercury closest to the sun and Pluto at the outer edge. Then, in 2005, astronomer Mike Brow

In the ten years preceding publication, the known solar system more than doubled in size. For the first time in almost two centuries an entirely new population

This reader's theater script builds fluency through oral reading. The creative script captures students' interest, so they will want to practice and perform. In

Exactly what is beyond Pluto? Why, in the last ten years, has the Solar System more than doubled in size? For the first time, in almost two centuries, an entire

An adventure in scientific discovery Pluto, the farthermost planet in the solar system, some 3,673 million mites from the Sun, was discovered by Clyde Tombaugh