|Introduction to SQL| |Form Query User Guide| |SkyServer Traffic
Page| |Contact Help Desk| SkyServer is the education and
outreach web site of the Sloan Digital Sky Survey (SDSS).
SkyServer makes the entire survey available, free of charge, to
the public. With SkyServer, you can study exactly the same stars
and galaxies that professional astronomers are studying right
now. The SDSS is one of the most ambitious scientific projects
of all time. Its goal is to make a high-quality three-
dimensional map of the universe. The survey uses a specially-
built 2.5-meter telescope in New Mexico, a CCD camera, and
sophisticated software to store and analyze its data. The SDSS
began in June 1998. By the time it ends, the SDSS will have
mapped 25% of the night sky, taking images of over 100 million
objects. The survey has already completed a preliminary map of
the universe: you can see the map in our First Discoveries
section. The main menu bar near the top of the screen (from Home
to Help) is always available to navigate th