num_pages: 24
description: People have followed Mercury's path through twilit skies since ancient times but only since Mariner 10 flew by in 1974 have we begun to unravel themysteries of the sun's closest neighbor. Impressive NASA photographs willtake you to a cratered world where days hot enough to melt lead and nightsat 300 degrees below zero last for almost three months.
language: English
title: Mercury
publisher: HarperCollins Publishers