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Stardust reveals surprising anatomy of a comet
Findings from a historic encounter between NASA's Stardust spacecraft and a comet have revealed a much stranger world than previously believed. The comet's rigid surface, dotted with towering pinnacles, plunging craters, steep cliffs, and dozens of jets spewing violently, has surprised scientists...
Young Galaxy in the Very Early Universe
Astronomers using a combination of data sets from the Mayall telescope at Kitt Peak, including the NOAO Deep Wide-Field Survey (see image), have found a galaxy that formed when the Universe was just six percent of its present age, suggesting the "dark ages" of the early universe ended in a patchy, gradual process...