The year 1998 is just a common year on the Gregorian calendar aside from being the year of the Gemini or the Twins. However, there are various significant events happened during this year.

In this year of January 6 when the Lunar Prospector (a mission selected by the National Aeronautics and Space Administration for full construction and development as part of the Discovery Program and designed for low polar orbit investigation on the moon) spacecraft was launched into the Moon