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...

Just how big is Earth compared to our solar system, the Milky Way, or even the universe? Although Earth is home to many different species and it seems huge to us, it is very small in comparison to our solar system and the universe. Discover what scientists have uncovered so far about Earth, our solar system, and the universe in this engaging book. High-interest text and vibrant images and photographs fill the pages of this book to keep students engaged while learning about space. A "Think ...

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.

¡La Tierra y la luna siempre están en movimiento! Conoce todo sobre cómo la luna gira alrededor de la Tierra y por qué la luna se ve diferente de noche a noche. La luna pasa por diferentes fases en función de su posición en relación con la Tierra y el sol. Las imágenes vibrantes son acompañadas de texto fácil de leer para 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 p...

La Tierra es un planeta que se mueve alrededor del sol. Sin embargo, la Tierra no es el único planeta en nuestro sistema solar. Es uno de los ocho planetas, varias lunas y otros objetos que orbitan nuestro sol. Los planetas tienen mucho en común, pero también tienen muchas diferencias. En este libro traducido al español, conoce todo sobre estos emocionantes planetas.