On November 20, 1969, Apollo 12 astronauts Pete Conrad and Alan Bean left the lunar surface and rejoined Richard Gordon in orbit. Their lunar module's ascent stage was no longer useful, so mission controllers deliberately sent it crashing b...
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Imagine falling feet-first toward a black hole. At first, if the black hole were isolated and you began far enough away, the experience would not feel supernatural. You would be in free fall...
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Every few years, a headline or social-media post seems to announce the same piece of cosmic good news: Pluto is a planet again. For anyone who learned the old nine-planet Solar System in sch...
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If Mars can come within roughly 55 million kilometers of Earth, why does a spacecraft sent there travel something closer to 480 million kilometers — and spend around seven months doing it? T...
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There is a moment at almost every birthday party when the room changes. The lights dim, a cake appears, tiny flames tremble above the icing and everyone waits while one person silently makes...
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A sleeping octopus can look almost ghostly. Its body lies still, its eyes close and its skin may fade toward a pale, uniform color. Then, without waking, the animal seems to erupt into activ...
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Few wildlife events are as disturbing as a whale stranding. An animal exquisitely adapted to life in deep water suddenly lies helpless on a beach, sometimes alone and sometimes alongside doz...
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Few sights make the Moon seem more theatrical than an early-autumn moonrise. A huge amber disk appears behind trees, rooftops or distant hills, looking far larger than the Moon we see later...
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The James Webb Space Telescope is often introduced through spectacular pictures: glowing stellar nurseries, delicate shells of gas, galaxies from the young universe and strange worlds orbiti...
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You check your phone and it is 4:44. Later, a receipt ends in $4.44. That evening, three fours appear in an address or a license plate. After the third encounter, coincidence can start to fe...
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