Humans have long been fascinated by space exploration, from the earliest NASA probes to the latest journeys toward the distant edges of the solar system. Readers will learn about the discovery of new stars and planets, the ways celestial bodies are formed, and much more. Features: Engaging sidebars highlight important space discoveries Timelines illustrate the ways our knowledge of space has changed over time Glossaries explain difficult scientific terms in a way that makes them easy to understand Eye-catching images give readers an up-close look at the far reaches of space www.factsfornow.scholastic.com

A new and detailed picture of Mercury is emerging thanks to NASA’s MESSENGER mission that spent four years in orbit about the Sun’s innermost planet. Comprehensively illustrated by close-up images and other data, the author describes Mercury’s landscapes from a geological perspective: from sublimation hollows, to volcanic vents, to lava plains, to giant thrust faults. He considers what its giant core, internal structure and weird composition have to tell us about the formation and evolution of a planet so close to the Sun. This is of special significance in view of the discovery of so many exoplanets in similarly close orbits about their stars. Mercury generates its own magnetic field, like the Earth (but unlike Venus, Mars and the Moon), and the interplay between Mercury’s and the Sun’s magnetic field affects many processes on its surface and in the rich and diverse exosphere of neutral and charged particles surrounding the planet. There is much about Mercury that we still don’t understand. Accessible to the amateur, but also a handy state-of-the-art digest for students and researchers, the book shows how our knowledge of Mercury developed over the past century of ground-based, fly-by and orbital observations, and looks ahead at the mysteries remaining for future missions to explore.

The smallest planet in our solar system is also the closest to the sun. That means on Mercury, one year is just 88 days long! Discover more facts about the small but mighty Mercury.

"Discusses the planet Mercury, including observations by ancient cultures, current knowledge of Mercury, and plans for future scientific research and space exploration"--

"At its best in synthesizing [current available] information to derive theories about the geological and tectonic histories of the planet ."—Science Books & Films "This book is another in the excellent University of Arizona Space Science Series, each of which is based on a conference. . . .but goes far beyond a conference proceedings to present a comprehensive summary of current knowledge. . . .I recommend this book as a valuable compendium of current knowledge."—Pageoph "This collection will be a most valuable addition to any research library."—Choice

Introduction to the planets Mercury and Venus, the two planets in our solar system closest to the sun.

Offers an authoritative synthesis of knowledge of the planet Mercury after the MESSENGER mission, for researchers and students in planetary science.