Picture a spaceship hundreds of times larger than the Apollo moonships, with propulsion provided by controlled hydrogen bombs. Or consider voyages to other stars taking decades or centuries, even at speeds of thousands of miles per second. Mr. Bova discusses in detail interstellar flight and astrophysics, covering some proposals by noted scientists such as huge interstellar "arks" that will take centuries to cross from one planetary system to another, interstellar ramjets that will use the tenuous interstellar gas to reach speeds of over a hundred thousand miles per second, or antimatter rockets that will propel themselves with the most volatile substance in the universe. This is not a "flying saucer" book, but the author does investigate the possible implications of contacts between humans and other races. Higher mathematics is essentially absent from this volume, which won't bother the younger space enthusiast. The only serious deficiencies are the discussion of Einstein's relativity, which is quantitatively inexact, and the absence of a bibliography.
Pub Date: April 1, 1973
ISBN: 0664325203
Page Count: 136
Publisher: Westminster
Review Posted Online: March 20, 2012
Kirkus Reviews Issue: April 1, 1973
A festive invitation to creative liberation.
A pleasingly tactile exploration of the possibilities inherent in mistakes.
"A torn piece of paper... / is just the beginning!" Spills, folded paper, drips of paint, smudges and smears—they "all can make magic appear." An increasingly complex series of scenarios celebrates random accidents, encouraging artistic experimentation rather than discouragement. The folded-over paper can be a penguin's head; a torn piece of newsprint can turn into a smiling dog with a little application of paint; a hot-chocolate stain can become a bog for a frog. Thanks to a telescoping pop-up, a hole is filled with nearly limitless possibilities. The interactive elements work beautifully with the photo-collaged "mistakes," never overwhelming the intent with showiness. Saltzberg's trademark cartoon animals provide a sweetly childlike counterpoint to the artful scribbles and smears of gloppy paint.
A festive invitation to creative liberation. (Pop-up. 4-12)Pub Date: Sept. 23, 2010
ISBN: 978-0-7611-5728-1
Page Count: 28
Publisher: Workman
Review Posted Online: Dec. 10, 2018
Kirkus Reviews Issue: Dec. 1, 2010
This genuinely clever math book uses rhyming couplets and riddles, as well as visual cues to help the reader find new ways to group numbers for quick counting. It’s a return to number sets, with none of those boring parentheses and <>signs. Here the rhyme gives a clue to the new ways of grouping numbers. For example: “Mama mia, pizza pie, / How many mushrooms do you spy? / Please don’t count them, it’s too slow, / This hot pie was made to go! / Let me give you some advice, / Just do half and count it twice.” A quick look at the pizza, and the reader can see each slice has the same number of mushrooms. Count by threes for half the pie, and double it. Each rhyme is given a double-page spread. The extra-large, brightly colored images leap off the page but never distract from the author’s intent. Some riddles are very challenging, but the author provides all the solutions in the back. Once the reader has seen the answers, the strategy is obvious and can be applied to other situations. Great fun for math enthusiasts and creative thinkers, this might also teach adults some new tricks. A winning addition. (Nonfiction. 7-10)
Pub Date: Feb. 1, 2001
ISBN: 0-439-21033-X
Page Count: 40
Publisher: Scholastic
Review Posted Online: May 19, 2010
Kirkus Reviews Issue: Dec. 1, 2000
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