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North America’s Cooling Due to Natural Causes in 2008?

An unusually long cooling of the Pacific Ocean lowered temperatures across North America—but it’s not proof that global warming has slowed down, scientists say.

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Yearlong Star Eclipse May Help Solve Space Mystery

On New Year’s Day a mysterious disk eclipsed a bright star—and won’t let up for 18 months. Now scientists hope to test an idea that might solve the centuries-old puzzle behind the phenomenon.

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Earliest Known Galaxies Spied in Deep Hubble Picture

By “pushing Hubble to the limit,” astronomers have created the deepest view yet of the universe, revealing tiny, blue galaxies that are now the earliest known.

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