Between 2009 and 2013, a space telescope stared at a single patch of sky and monitored the brightness of more than a hundred thousand stars, looking for the tiny, regular…
In the autumn of 2017, astronomers spotted something that had never been seen before: an object passing through our solar system that had come from another star. Everything we had…
On the night of August 15, 1977, a radio telescope in Ohio was doing what it did every night: silently scanning the sky, listening for radio signals from the depths…
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On the night of September 1, 1859, and into the following day, the people of Earth witnessed something extraordinary and, to many, deeply unsettling. Brilliant auroras, the shimmering curtains…
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Early in the morning of June 30, 1908, over the basin of the Podkamennaya Tunguska River in central Siberia, the sky tore open. Witnesses dozens of miles away described…
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Fifty-seven years after Neil Armstrong stepped off the ladder, the machinery that got him there is still here — parked in hangars, suspended from museum ceilings, and lying on…