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A Rare Class of Galaxies
In the vast tapestry of the universe, most galaxies shine brightly across cosmic time and space. Yet a rare class of galaxies remains nearly invisible—low-surface-brightness galaxies dominated by dark matter and containing only a sparse scattering of faint stars. One such elusive object, known as CDG-2, may be among the most heavily dark matter-dominated galaxies ever discovered.
NASA's Hubble Space TelescopeWelcome to the Universe
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Image Of The Day
Fishing Boats and City Lights
Fishing boats illuminate the Arabian Sea along India’s west coast with green lights designed to attract squid, shrimp, sardines, and mackerel in this nighttime photograph from the International Space Station, orbiting 259 miles above Earth. At lower right, the city lights of Hyderabad—renowned for its historic diamond and pearl trade—stretch westward toward the Mumbai Metropolitan Region, home to over 26 million people and the heart of Bollywood.
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Freedom 250
NASA Celebrates America’s 250th Birthday
Our spirit of adventure and innovation will raise our nation to new heights.
From the earliest days of exploration, to the first steps on the Moon and the missions shaping our future, NASA represents the spirit of discovery that defines our nation. As the United States approaches its semiquincentennial, Freedom 250 highlights how innovation, courage, and scientific leadership have carried America forward — and how NASA continues to expand the frontier for the next generation.
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