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The Astrometry Department of theU.S. Naval Observatory is responsible for the determination offundamental positions, motions and distances of selected celestialobjects. The primary purpose of this website is to distribute information related to the positions and motions of the stars and planets, mainly to the Defense community.

Online Astronomy Portal since 1997. Phases of the Moon, Astronomical Calendar, Astrolinks, Bookstore, Stars, and much more information. . Lists the 50 brightest stars visible from Earth, and the 50 closest stars to Earth. Proper names, distances, magnitudes, spectral classification and other data are provided for each star.

Fly to Mars and Jupiter! Travel through deep space! SpaceWander's award-winning multimedia space trip features real NASA images! Check out our space store for space book, space videos, telescopes, and NASA hats. You can even buy a REAL SPACE TRAVEL! SpaceWander's trip through the Universe features space pictures of Mars, Jupiter and Hubble images of stars, nebulae and galaxies. Multimedia experience of flying by spaceship through the solar system. Visit each planet. Real space pictures from NASA. In English, French, Italian, Spanish and Russian. Recommended for kids.