About our used conditions ratings:

·Like New: An apparently unread copy in excellent condition. The dust cover is intact, and the pages are clean and not marred by notes or folds of any kind.

·Very Good: A copy that has been read, but remains in excellent condition. May have writing on the inside cover but pages are unmarred.

·Good: A copy that has been read, but remains in clean condition. All pages and covers are intact. The spine may show signs of wear. Pages can include limited notes and highlighting, and the copy can include "From the library of" labels or previous owner inscriptions.

Why doesn't the Moon fall to Earth? Why do the seasons change? What is parallax? How can you simulate weightlessness on Earth? Young scientists will explore the solar system through applied space science answering questions about space. The far-out space experiments in this book will help students make a model of a lunar eclipse, build a spectroscope, and more. Many experiments include ideas students can use for science fair projects.

0.87 pounds