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ESO brings starburst galaxy into focus

NGC 4666's vigorous star formation is probably the result of gravitational interactions with neighboring galaxies.

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Tour the solar system: Mercury

In the first installment of the "Tour the solar system" series, Associate Editor Liz Kruesi explores what scientists know about the innermost planet and what they're still hoping to learn in the future.

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Observing podcast: Corona Australis, the Castaway Cluster, and the Red Spider Nebula

August 26-September 2, 2010: Corona Australis makes a nice target for beginning observers, while the Castaway Cluster and the Red Spider Nebula provide nice targets for telescope owners.

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Atlas of the Stars: New Edition