- Constants and Equations: Mercury - Comprehensive range of statistics about Mercury.
- Facts About Mercury - Provides basic facts about the planet.
- Mercury - From The Nine Planets multimedia tour of the solar system.
- Mercury and its History - Offers background and facts about Mercury.
- Mercury Images - Welcome to the Planets - Pictures of Mercury
- NSSDC: Mercury - From NASA's photo gallery.
- ORRERY: Mercury - Introduction to Mercury with information about the Messenger mission.
- Planet Mercury - Overview - General overview of the planet Mercury with facts and pictures.
- The Planet Mercury - Includes quizzes and pictures.
- The Planet Mercury - Detailed look at the planet.
- Transit of Mercury, May 2003 - This site will contain live images of the transit of Mercury across the face of the Sun as recorded at Worth Hill Observatory in May 2003.
- USGS Astrogeology: Mercury - US Geological Survey Mercury page, with links to Geological information about the planet.
- Views of the Solar System - Mercury - Detailed description of Mercury with images.
- Windows to the Universe - Mercury - Information summaries with some images of Mercury.