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Seeing a halo

The Hubble Space Telescope reveals an unexpected size and shape to the halo of galaxy Centaurus A

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Summer shower

The Southern Delta Aquariid meteor shower sparkles in late July

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Surprising shape

Nucleus of Rosetta target consists of two separate parts

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Reliving Apollo 11

EXCLUSIVE! How one small step became a giant leap

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Starmus 2014 Rocks Astronomy!

Join astronomy’s greatest minds in the Canary Islands, September 22–27, 2014. New speakers continue to be announced!

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Summer Sweepstakes

WIN a Celestron telescope and more!

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3-D outburst

The first high-res model of the expanding cloud from Eta Carinae

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Astronomy is available on the App Store!

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Black hole fireworks

Jets from M106's black hole reduce the available gas for star formation

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Faroe Islands Eclipse

Join Astronomy magazine and MWT Associates, Inc., March 14–23, 2015, as they take in totality from these unspoiled North Atlantic islands. Learn more »

Organic conundrum

Life building blocks found in LMC stars are more varied

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Uwingu Mars

Name a crater ... make an impact!

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Seeing a halo

The Hubble Space Telescope reveals an unexpected size and shape to the halo of galaxy Centaurus A

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PICTURE OF THE DAYsee all »

M106

Spiral galaxy M106 floats through space in the constellation Canes Venatici the Hunting Dogs. It lies some 25 million light-years from Earth. (14-inch homemade Newtonian reflector at f/3.8, FLI 8300 CCD camera, 10 hours total exposure)
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