Other Eclipses
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An annular solar eclipse will grace American skies on Saturday. Skywatchers along a narrow path from Oregon to Texas will […]
First Attempt
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There’s nothing like a big public failure in your first days on the job to inspire confidence. But that’s what
Astonishing Star
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A year ago yesterday, lightning bolts across parts of Europe and Asia changed direction. The switch was caused by an
Lining Up
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The Moon lines up with a bright star and planet early tomorrow. Regulus, the heart of Leo, is close to
Ejnar Hertzsprung
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One of the first things every astronomy student learns is the H-R diagram — a plot of stars based on
Moon and Venus
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The Moon is closing in on the brilliant “morning star.” They’re far apart tomorrow, but will stand almost side by
Moon and Pollux
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Pollux, the brighter “twin” of Gemini, stages a beautiful encounter with the Moon tonight. They’re quite close as they climb
Astounding Star
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It’s not often that a single star transforms our view of the universe. But it happened with a star that
Star in Transition?
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A star in a nearby galaxy appears to be going through a rare transition — from a monster to a
Moon and Aldebaran
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Until we started sending missions to the Moon, the concept of the lunar surface was one of jagged mountains and