When Stink discovers that Pluto has been downgraded from a planet to a dwarf planet, he launches a campaign in his classroom to restore its status to that of a full-fledged member of the solar system.

"People, children especially, have been baffled, bewildered, and even outraged by the fact that Pluto is no longer called a planet. Through whimsical artwork and an entertaining dialog format, this book explains why this is so. Providing a history of the small, icy world from its discovery and naming to its recent reclassification, this book presents a fascinating look at how scientists organize and class our solar system as they gain new insights...

Pluto loves being a planet. That is, until the day he gets a call from some Earth scientists telling him he isn't a planet anymore! You probably wanted to meet a real planet, huh? So, Pluto takes the reader on a hilarious and informative journey through the solar system to introduce the other planets and commiserate about his situation along the way. Younger readers will be so busy laughing over Pluto's interactions with the other planets, asteroids,...

"Find out about the first-ever close-up photos of Pluto's incredible landscape and what this means for the future of our understanding about planets in this fascinating book, chock full of the latest scientific information."--

"Pluto has not been a planet since 2006. But this tiny world still inspires people of all ages while sparking controversy. In this delightfully witty book, astronomer Dean Regas teaches you how to educate your grown-up about the cutting-edge science of space, most crucially the reason why Pluto is NOT a planet anymore. Delving into the history of space discoveries, the key players who have helped our understanding of the universe (including the 11-year-old...

Infuriated by the declaration that Pluto is no longer a planet, President Penguin and his penguins invade Earth and it is up to Ricky and his robot pal to defeat them--with some help from Ricky's cousin Lucy and her pets.

"Ride along with the New Horizons spacecraft as she rockets three billion miles to Pluto! Watch her take the first close-up photos of Pluto, and then journey another billion miles to mini-world Arrokoth. You'll whiz through space at more than 10 miles per second; learn how giant planet Jupiter helped the little spacecraft reach Pluto; and discover the astonishing surface feature that made the world fall in love with Pluto"--

When the New Horizons spacecraft whizzed by Pluto in 2015, Earthlings were dazzled by the breathtaking images it beamed home. They revealed a never-before-seen alien landscape - a world of mountains made of ice mixed with plains of frozen-solid methane and nitrogen. After over two years of poring over the data, NASA has made remarkable new discoveries about everyone's favorite dwarf planet. But New Horizons didn't stop there.