A mysterious, one-off flash of energy from an unknown object outside the Milky Way has left astronomers puzzled. The research ...
In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...
On an astrotourism trip like Gorov's, celestial objects take center stage. More travelers are seeking out the feeling of awe ...
Arizona's dark skies are a haven for astronomers and photographers. Some communities are fighting to keep them that way.
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