Amidst more than 200 billion stars in a galaxy measuring 100,000 light years across, life has been discovered only in one place in the Milky Way: planet Earth. Yet the Milky Way is only one of many galaxies in the vast universe. While extraterrestrial life remains a mystery, explore discoveries about the stars and galaxies we see in the night sky with this engaging science book. Fifth grade readers will launch into learning about types of galaxies, Earth's place in the universe, properties of the Milky Way, astronomical tools, and more through this high-interest informational text filled with vibrant photographs. Aligned to the Next Generation Science Standards, a hands-on "Think Like a Scientist" lab activity and a "Your Turn" page at the end of the book support STEM Education and provide young scientists with an opportunity to apply what they've learned in the text. Helpful diagrams, a timeline of major space science discoveries from 1610 to 2010, and text features, such as a glossary and index, are also included to reinforce content-area literacy and improve close reading.