What Are Planets?
From the Series Destination Space
True planets, dwarf planets, and exoplanets--what's the difference? Learn the three rules scientists use to decide what makes something a planet. Discover how the search continues outside our solar system to find a planet like Earth.
Format | Your Price | Add |
---|---|---|
978-1-0396-4475-5
|
$20.95 | |
978-1-0396-4666-7
|
$7.95 |