Holiday Décor Uproar at Air Force Base Housing Complex

A routine reminder about holiday lights touched off a spirited debate about rules, joy and what it means to make a home when life is always in motion.

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How to See the Northern Lights on Wednesday

A geomagnetic storm that made the aurora borealis visible farther south than normal is expected to continue for another night. But clouds may obscure your view.

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A.I. Isn’t the Only Thing Pushing Up Electricity Bills. (But It’s Mostly A.I.)

Calvin Butler, the chief executive of Exelon, one of the nation’s largest utility companies, is trying to keep the lights on.

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A Defender of Darkness in the Darkest Place on Earth

A Chilean astronomer has become dedicated to battling light pollution in the Atacama Desert and preserve what is considered the best place on Earth to study space.

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The Met’s ‘Sputniks’ Fall to Earth for a Summer Cleaning

The glittering chandeliers at the opera house get washed every year. It’s an elaborate production.

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Why This Pennsylvania City Put Its Streetlights on a Dimmer

After passing a Dark Sky ordinance to curb light pollution and save energy, Pittsburgh is installing adjustable streetlights.

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How Lena Imamura, a Neon Light Artist, Spends Her Day in the Studio

Lena Imamura, the co-owner of GLO Studio, taps into her alter ego to get through a day of flames, shopping for materials and karaoke.

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Northern Lights May Be Visible as Far South as Alabama

Streaks of colorful light could paint the sky over a large portion of the country on Sunday night into Monday morning amid a severe geomagnetic storm.

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Lou Nasti, Who Brought Christmas Displays to Extravagant Life, Dies at 79

A robotics specialist, he animated puppets and dolls for displays worldwide. His “Toyland,” with a two-story-high Santa, drew sightseers to a Brooklyn home for years.

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Embracing Darkness on the Isle of Rum

Europe’s newest dark-sky sanctuary is a wild Scottish island with 40 residents and celestial lighting.

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