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Product Description
Product Description
First, Pluto left. Then it came back, along with Ceres and Eris...and now Haumea and MakeMake, too! The recent actions of the International Astronomical Union have put every solar system book out of date. In response, National Geographic joins forces with David Aguilar of the Harvard Smithsonian Astronomical Observatory to revise our 2008 book—and to update young readers on the high-interest topic of space. Using simple text and spectacular photorealistic computer art by the author, this book profiles all 13 planets in their newly created categories—plus the sun, the Oort Cloud, comets, and other worlds being discovered. Back-of-the-book activities offer hands-on fun for budding astronomers.
Excerpt. © Reprinted by permission. All rights reserved.
Once upon a time, long ago and far away, there were precisely seven planets: Moon, Mercury, Venus, Sun, Mars, Jupiter, and Saturn, all apparently revolving around a solidly fixed Earth. And then about five centuries ago came Nicholas Copernicus, who invented the solar system. He said the Sun was really in the middle surrounded by six planets: Mercury, Venus, Earth (with Moon), Mars, Jupiter, and Saturn. It was truly the Sun’s system, with Earth now a spinning planet. It was all very simple and elegant.
Three centuries after Copernicus, things were no longer so simple. In 1781 another big planet, Uranus, was found, and then a lot of small ones were given names like Ceres, Astraea, Flora, Hygeia, and Kalliope. In 1846, still another big planet, Neptune, gained planetary status. By 1854 there were 41 planets, and astronomers cried “Enough!” So they all decided there were eight large planets, and the little guys weren’t really planets but minor planets.
Today astronomers know that the solar system is much more complex and interesting than anyone dreamed of in the 1850s. There are more than 130 natural satellites, and more are being discovered. One, Saturn’s Titan, is bigger than the planet Mercury. If Titan and our moon had independent orbits, they would qualify as planets. Astronomers now have orbits for nearly 500,000 minor planets, half of which have been assigned numbers, and about 15,000 of which have been given names. Almost all of them are irregularly-shaped rocks, but at least one, Ceres, is massive enough for its gravity to pull it into a sphere, so it is a dwarf planet. And there are the comets, hoards of them in the deep freeze beyond Neptune.
Occasionally some of these huge chunks of dirty ice get nudged into the inner parts of the solar system, where they thaw out and sprout long, beautiful tails. And a few of these ice balls are massive enough to pull themselves into spherical dwarf planets. Pluto is one of these, smaller than our moon. Makemake and Haumea are still smaller, while Eris is a little larger than Pluto. Three of these even have their own satellites. Undoubtedly more of these icy dwarf planets await discovery.
For now, there are eight classical planets and five dwarf planets, making thirteen!
--Dr. Owen Gingerich, Former Research Professor of Astronomy, Harvard and Astronomer Emeritus, Smithsonian Astronomical Observatory
Three centuries after Copernicus, things were no longer so simple. In 1781 another big planet, Uranus, was found, and then a lot of small ones were given names like Ceres, Astraea, Flora, Hygeia, and Kalliope. In 1846, still another big planet, Neptune, gained planetary status. By 1854 there were 41 planets, and astronomers cried “Enough!” So they all decided there were eight large planets, and the little guys weren’t really planets but minor planets.
Today astronomers know that the solar system is much more complex and interesting than anyone dreamed of in the 1850s. There are more than 130 natural satellites, and more are being discovered. One, Saturn’s Titan, is bigger than the planet Mercury. If Titan and our moon had independent orbits, they would qualify as planets. Astronomers now have orbits for nearly 500,000 minor planets, half of which have been assigned numbers, and about 15,000 of which have been given names. Almost all of them are irregularly-shaped rocks, but at least one, Ceres, is massive enough for its gravity to pull it into a sphere, so it is a dwarf planet. And there are the comets, hoards of them in the deep freeze beyond Neptune.
Occasionally some of these huge chunks of dirty ice get nudged into the inner parts of the solar system, where they thaw out and sprout long, beautiful tails. And a few of these ice balls are massive enough to pull themselves into spherical dwarf planets. Pluto is one of these, smaller than our moon. Makemake and Haumea are still smaller, while Eris is a little larger than Pluto. Three of these even have their own satellites. Undoubtedly more of these icy dwarf planets await discovery.
For now, there are eight classical planets and five dwarf planets, making thirteen!
--Dr. Owen Gingerich, Former Research Professor of Astronomy, Harvard and Astronomer Emeritus, Smithsonian Astronomical Observatory
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4.6 out of 5 stars (11 customer reviews)
6 of 6 people found the following review helpful
4.0 out of 5 stars
Awesome!, Mar 25 2011
By Lisa Barker - Published on Amazon.com
This review is from: 13 Planets: The Latest View of the Solar System (Hardcover)
My eight-year old loves this book. He is in second grade and just beginning to study the solar system. He's gobbling up the facts in this book about the eight classic planets and the five dwarf planets. It's just as interesting for mom, too. What I really like is the inclusion of the name origin for each planet. My son is getting science and mythology lessons with this book. We are both awed by the photorealistic computer art. This is definitely a must have for the classroom or home library as it has the most up-to-date information on our solar system. - Biblio Reads Children's Book Review
4 of 4 people found the following review helpful
5.0 out of 5 stars
Great for updated information!, Sep 22 2011
By Barbara - Published on Amazon.com
Amazon Verified Purchase(What's this?)
This review is from: 13 Planets: The Latest View of the Solar System (Hardcover)
My son is VERY interested in the solar system. His biggest complaint is that many of the books about this topic are out of date. He was THRILLED to see a current book that talks about all of the dwarf planets too. This is a great book!
3 of 3 people found the following review helpful
4.0 out of 5 stars
Nice book for kids and adults., July 2 2011
By Maria - Published on Amazon.com
This review is from: 13 Planets: The Latest View of the Solar System (Hardcover)
We bought this book for our 4 year old after he showed an interest in planets. It's a good first book for space. His attention span is still a little tightly wound, but we can see that it will definitely be a book he will enjoy in the coming year! It's full of great pictures, background stories on the planets and interesting facts & figures that updated our dated knowledge of the solar system. Waiting for the opportunity to use what we've learned in conversation :D
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