They were cast by contrail clouds—thin ice crystal trails left behind by high-altitude jets. Between 7 and 8 a.m., the sun sat low on the horizon, its light slicing across the sky at just the ...

If clouds are heavy, why don’t they just fall to the ground? There’s one key concept behind this. Meteorologist Robb Ellis explains. "We are listening now": Democrats' path forward leads back ...

There are questions that have been on the human mind for hundreds of years. Many of them, of course, are related to the ...

recorded the sky ablaze at 3:40 a.m. on Saturday, Feb. 1, the American Meteor Society says. Video screengrab A mysterious throbbing light seen racing behind clouds in the northeastern U.S. and ...

I keep my sightline on Levi’s little orange ski boots as he hikes steadily in front of me, ready to react should he slip or ...

Behind "Caspar David Friedrich: The Soul of Nature" is the tale of German Romanticism in the Age of Napoleon. If you were ...

Niamh Algar and Tom Hollander, star in Cross' new series for Sky, which draws inspiration from 1960s British spy shows it in ...

Welcome to our weekly music post, where we spotlight our favorite new songs and albums. Hop in the comments and tell us: What new music are you listening to? The White Lotus slickly sets the table for ...

If they had seen the dead bird in a state of decay, they would have simply sidestepped it. But because they’d witnessed the ...

When the hot water vapor coming from a jet engine hits the very-cold air at high altitudes, it crystallizes and leaves a white, cloud-like trail in the sky behind it. With more than 45,000 ...