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Friday in D.C. occupied a special spot between May Day and Derby Day, and seemed to rise to the atmospheric occasion. It ...

The cloud, named Eos, is chock-full of molecular hydrogen and possibly rife with star-forming potential in the future.

Indonesia's Mount Ibu spewed red lava and thick grey ash clouds that towered 5,000 meters (16,400 feet) into the sky during a two-minute eruption Tuesday morning. The eruption spewed thick ash ...