num_pages: 32
description: Describes the planet closest to the sun, examining its size and composition, its surface features, its orbit, and efforts to learn more about this planet.
language: English
title: Mercury
titlecomplete: Mercury (Isaac Asimov's 21st Century Library of the Universe)
genres: Nonfiction, Science
ratings_count: 12
series: Isaac Asimov's Library of the Universe, Isaac Asimov's New Library of the Universe
publisher: Gareth Stevens Pub