Haystack Observatory (aerial view)

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My "Backyard" Radio Observatory

Nestled in the woods of suburban Boston is a 1,300-acre complex of radio telescopes that have served civilian astronomers — and super-secret defense projects — for nearly 50 years.

Observatories on Kitt Peak

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Darkness Still Reigns Over Kitt Peak

Since astronomers started calling Tucson home in 1958, the city's population has quadrupled to more than 500,000. Yet the night sky above the observatories on nearby Kitt Peak is as dark now as it was 20 years ago.

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Big Bear's Big New Eye

The "first-light" image from the world's largest solar telescope reveals details in an Earth-size sunspot only 50 miles across.

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One Star, Seven Planets

European astronomers had found a bustling solar system in the southern constellation Hydrus: a Sunlike star with at least five and probably seven worlds swarming around it.

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Astro2010: U.S. Astronomy's Crystal Ball

If you had $12 billion to spend on ground- and space-based observatories over the next 10 years, how would decide what to build? A 255-page National Research Council study, just released, provides some answers.

Pan-STARRS in dawn's light

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Two Wide Eyes on the Sky

Astronomers are starting to make observations with the first Pan-STARRS telescope in Hawaii (seen here) and the LOFAR radio interferometer in the Netherlands.

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A Cauldron of Newborn Stars

The Hubble Space Telescope has returned its high-definition gaze to a spectacular bubble of glowing hydrogen known as N 11 in the Large Magellanic Cloud.

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"First Light" for a Flying Telescope

SOFIA, the Stratospheric Observatory for Infrared Astronomy, has finally feasted on starlight after a tortuous 14-year development.

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The Hidden Face of M83

The Southern Pinwheel Galaxy is already famous as a gorgeous deep-sky showpiece. Now astronomers have probed its structure with a high-resolution infrared view.

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Peak Picked for World's Largest Scope

If you were building a mega-telescope with an aperture half the length of a football field, where in the world would you put it?

Epsilon Aurigae resolved!

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Mystery Eclipse Caught in the Act

After struggling for decades to understand why Epsilon Aurigae's partial eclipses last so long, astronomers are finally watching the event as it happens.

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World's Largest Solar Scope

If one final permit can be obtained — and some Hawaiian preservationists won over — construction on the Advanced Technology Solar Telescope should begin later this year.

WISE first-light image

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WISE Sees First Light

Scientists unveil the first image from the Wide-field Infrared Survey Explorer satellite, which will map the sky in depth and detail at new wavelengths.

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Mel's Arecibo Adventure

A globetrotting mascot gets a behind-the-scenes tour of the world's largest single-dish radio telescope.

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Big Pix from Herschel

Europe's new Herschel Space Observatory is up and running and showing what it can do. You've never seen the far-infrared sky like this.

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ALMA Dish Takes the High Road

The Chajnantor plateau in Chile's Atacama Desert has an elevation of more than 16,000 feet — harsh conditions for humans, but perfectly suited to the world's greatest array of submillimeter-wave radio telescopes, now under construction.

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Refurbished Hubble Shows Its Stuff

Hubble's upgraded cameras and instruments are fully up and running. NASA has released a bunch of new pictures and results showing off what the buffed-up scope can do.

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Two Observatories Saved from Wildfire

Although Southern California's devastating Station Fire still rages nearby, the Mount Wilson and Stony Ridge observatories have escaped destruction.

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Raging Fire Threatens Mount Wilson

One of the world's most famous and historic observatories is threatened by an out-of-control wildfire in California.

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Planetary Preemies?

Protoplanetary disks around three young stars turn out to have large central holes, which were presumably cleared by still-growing Jupiter-mass planets. But there’s a problem: the stars are too young.