Polar alignment doesn’t have to be expensive or complicated. This guide shows how a $400 mount can align itself automatically—and how you can build it yourself. Learn how the system works, what parts ...

Add Yahoo as a preferred source to see more of our stories on Google. Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season, followed ...

A major winter storm is impacting much of the nation east of the Rocky Mountains. The storm's intensity is caused by a combination of a stretched polar vortex, a wavy jet stream, and moisture from the ...

A forecast map reveals which states can expect to see "persistent cold" in the weeks ahead, after experts said the polar vortex would unleash waves of icy air across parts of the U.S. through January.

Forecasters say that the polar vortex will usher in waves of frigid air across parts of the U.S. through January. The "more active polar vortex will drive colder air and snow across the central and ...

USCGC Polar Star (WAGB-10) enjoys ice liberty while the cutter sits hove-to in McMurdo Sound during Operation Deep Freeze, Jan. 7, 2025. US Coast Guard photo The U.S. Coast Guard’s only heavy ...

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With over 170 million Americans facing below average temperatures, even colder air may be on the horizon thanks to the displacement of the polar vortex that will lock in a deep winter feel and park ...