Hubble Rocks with a Heavy-Metal Home
This 10.5-billion-year-old globular cluster, NGC 6496, is home to heavy-metal stars of a celestial kind! The stars comprising this spectacular spheric
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Anticrepuscular Rays over Colorado
What’s happening over the horizon? Although the scene may appear somehow supernatural, nothing more unusual is occurring than a setting Sun and
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Up and Over
Cassini orbited in Saturn’s ring plane — around the planet’s equator — for most of 2015. This enabled a season of flybys of th
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Cirrus over Paris
What’s that over Paris? Cirrus. Typically, cirrus clouds appear white or gray when reflecting sunlight, can appear dark at sunset (or sunrise) a
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Sagittarius Sunflowers
These three bright nebulae are often featured in telescopic tours of the constellation Sagittarius and the crowded starfields of the central Milky Way
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