Blasting through the solar system!
Professor Albert Hopper, frog and Science Hero, travels with his niece Polly and nephew Tad throughout the solar system, exploring the sun, asteroids and comets, and the planets.
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| Format: | BOOK |
| Language: | ENGLISH |
| Published: |
Henry Holt and Company
2021
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| Series: | Albert Hopper science hero 2 |
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