Our closest solar system is about 10 light years away.It has two main types of planets. Some are rocky and small, like planet Earth, while others are huge balls of gas, like Jupiter. Learn about how astronomers once thought our solar system was the one and only, to how they have now discovered hundreds of stars with planets orbiting them, which means there could be billions of solar systems in outer space! Just maybe, these alien worlds could host life, like our own amazing planet. This bo...

Five and counting! So far, astronomers have discovered five dwarf planets in our solar system. Pluto, which was once thought of as the ninth planet, is today classified as a dwarf planet. This book looks at the current dwarf planets, characteristics, size, and orbital patterns, as well as the three rules scientists follow to characterize these tiny, round space objects. Every day new discoveries are being made. Who knows how many dwarf planets we will find in the future! This book will all...

Después del rotundo éxito en todo el mundo con su primera entrega de la guía para conocer el Universo, el prestigioso científico Stephen Hawking y su hija Lucy, acercan de forma divertida y amena la ciencia a los jóvenes de la casa.Algo no marcha bien. Eric, el antiguo vecino de George, está en Florida trabajando en un proyecto científico para descubrir si hay vida en el planeta Marte y en otros lugares del Sistema Solar. El robot encargado de la misión actúa de fo...

Home, Sweet Home! This title is about Earth, the planet we live on! The layers of the Earth, how it relates to the other planets in our solar system, and how it is the only known planet to sustain life, as far as we know, are all discussed in this science title. Learn about how the Earth rotates on its axis, giving us day and night, and how it orbits and is warmed by that giant star we call the Sun. This book will allow students to make observations to determine the effect of sunlight on E...

¡Las sombras están en todas partes! Aprende todo acerca de por qué tenemos sombras y por qué a veces son cortas ya veces son altas. Las imágenes vibrantes son acompañadas de texto fácil de leer para ayudar a simplificar temas de ciencias y mantener la atención de los estudiantes de principio a fin. Este lector también incluye instrucciones para una actividad de ciencias interesante y problemas de práctica para fomentar la comprensión de los estudiantes sobre cómo las fuentes de luz afectan...

Readers find out what it's like for astronauts to eat, sleep, and work on a manned space flight in this adventurous Spanish-translated nonfiction reader. Children will discover what it's like to be weightless in zero gravity, how Mission Control helps keep astronauts safe, and what astronauts do during their free time through vivid photographs, interesting, informative text, and stimulating facts.

What has a head, two tails, and shoots across the sky? A comet. Coming from the far edges of the solar system, most comets travel around the Sun, while meteors appear as flashing streaks of light in the night sky. Explore these amazing celestial wonders as they zip through space! This book looks at the difference between comets and meteors and their effects on Earth. The physical characteristics of each are identified in detail. This book won’t come crashing down! It’s filled with fun fact...

El sol nos da calor y luz. También ayuda al cambio de estaciones. ¡Conoce sobre todas las formas en que el sol es muy importante para nuestro planeta! Las imágenes vibrantes y familiares se combinan con texto fácil de leer para proporcionar un claro entendimiento a los lectores del efecto del sol, simplificando los conceptos científicos. Este lector también incluye instrucciones para una actividad de ciencias interesante y problemas de práctica para fomentar la comprensión de los estudiant...

While only 12 people have actually had contact with it, many songs and movies have featured this shining object. But it's not a superstar, or even a star at all. It's our moon. From tides and tracking time to gravitational pull on orbits, the moon affects life here on Earth. Take a trip to the moon through the fact-filled pages of this book! Third-grade students will enjoy learning about the physical features and phases of the moon, tides, lunar calendars, and more through this high-intere...