中文简介：

外星人真的存在吗？UFO是真实的吗？一场探索发现宇宙外星生命的比赛正在进行中！

本书将利用事实知识来梳理各种神话传说，带领你探索寻找外星生物背后真正的科学。太空专家乔尔达•莫兰西（Joalda Morancy）将带领读者参观太阳系以及更远的地方，从寒冷的木星卫星到金星的云层，执行新的太空任务——寻找外星人最有可能的藏身之处。一路上，孩子们会学习许多相关知识：

- 派往火星寻找火星人的探测机器人

- 51区的真实情况

- 发现先进外星文明的方法（提示：寻找暗星）

本书由艾米·格莱姆斯（Amy Grimes）绘制精美插图，引导读者探索彗星，与未来的宇宙飞船竞赛，并讨论如果遇到外星人，打完招呼后会对他们说些什么。

外星人可能像巫师和怪物一样异想天开，但这本书将表明，科学家不仅相信外星人的存在，并坚信找到他们只是时间问题。

英文简介：

Do aliens exist? Are UFOs real? The race is on to discover alien life in this perfect gift for kids who love space.

This book will sort myth from fact to bring you the real science behind the search for alien lifeforms. Space expert Joalda Morancy will take readers on a tour of the solar system (and beyond) on board new NASA missions searching for the most likely alien hiding places―from icy moons of Jupiter to the clouds of Venus. Along the way kids will find out about:

- The robots sent to Mars to look for Martians

- What really goes on at Area 51

- Ways to spot an advanced alien civilization (hint―look for dim stars)

In this book beautifully illustrated by Amy Grimes, readers will explore a comet, race futuristic spaceships, and discuss what we would say to aliens when we finally meet them (after “hello!”).

They may seem as fanciful as wizards and monsters, but this book will show that scientists not only believe that aliens exist―but that it's only a matter of time before we find them.