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Cosmic Archaeology

Our home galaxy, the Milky Way, grew to its current size in part by consuming smaller galaxies. Now, new data from NASA’s Hubble Space Telescope shows definitive evidence of a dwarf galaxy merging with the young Milky Way galaxy in the earliest phases of its evolution. This finding extends our knowledge of our galaxy’s history 1.8 billion years farther back in time than before.

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Colorful Collage of Tarantula Nebula

Like a collage made of layered sheets of colored cellophane, a vibrant new image layers observations of a famous star-forming nebula from NASA space telescopes. The resulting cosmic “craft” reveals new details about the star formation region known as 30 Doradus, or the Tarantula Nebula.

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Space image with stars and swirls of colorful orange, red and white.

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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From left: NASA astronauts Harrison “Jack” Schmitt, Reid Wiseman, Victor Glover, and Christina Koch with CSA (Canadian Space Agency) astronaut Jeremy Hansen during the “Salute to America” event on July 4, 2026, on the National Mall in Washington, D.C.
NASA/Keegan Barber