Moon and Jupiter
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If Earth’s radiation belts were as strong as those of Jupiter, we might never be able to leave our home […]
Ira Sprague Bowen
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There was something odd about the Cat’s Eye Nebula — a colorful bubble of gas blown by a dying star.
Winter Solstice
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Winter arrives in the northern hemisphere tomorrow night. That’s the time of the winter solstice. Tomorrow and Friday will be
Unexpected Galaxies
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Scientists often say they hope their experiments produce unexpected results, because that gives them something new to think about. If
Last Batch
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Webb Space Telescope is getting ready to wrap up an ambitious early project: Cosmos-Web — the Cosmic Evolution Survey. It’s
Moon and Saturn
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It’s a long time between birthdays on Saturn. That’s because a year on the giant planet lasts about 29 and
Sweeping Up
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Canterbury Cathedral is one of the most historic buildings in England. That history isn’t limited to assassination, civil war, and
Gomeisa
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Our sedate, middle-aged Sun spins on its axis about once a month. This leisurely rate keeps the Sun nice and
Mirzam
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The Big Dog trots across the southern sky on December nights. It’s easy to spot because it’s home to Sirius,
Sirius Rising
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The brightest star in all the night sky is clawing its way into prime-time viewing. Sirius is low in the