When it slammed into Earth's magnetic field, the impact triggered a severe (G4) geomagnetic storm, which in turn led to striking auroras deep into mid-latitudes.CMEs carry electrically charged atoms,

The states that will likely be able to see the northern lights, as long as the weather is clear, are, according to the center's maps: North Dakota, South Dakota, Michigan, Iowa, Vermont, New Hampshire, Maine, Washington, Idaho, New York, Alaska, Minnesota, Iowa, Wisconsin, and Montana. Adding in Alabama and California, that's at least 17 states.

Tropical Storm Alvin formed in the the eastern Pacific Ocean on Thursday, May 29, becoming the first named storm anywhere in the Northern Hemisphere this year.

As glaciers melt across the Northern Hemisphere, newly exposed coastlines reshape ecosystems, trigger geological shifts, and challenge communities to adapt to a changing world. The post Northern Hemisphere Glaciers Retreat,

This possibility is being prompted by a G4 geomagnetic storm that came from a coronal mass ejection (CME) from the sun that hit Earth early Sunday morning.

Memorial Day weekend is often touted as the unofficial start of summer across the United States, but the first official day of summer differs between weather forecasters and astronomers.

Alvin will have no direct impacts to the state of Florida, or much of the U.S., but becomes the latest first named storm to develop since 1973.

Tropical Storm Alvin has sustained winds of over 39 mph and became the first named storm of 2025 in the Northern Hemisphere.

This Cold War outpost concealed more than submarines—it hosted a devastating eruption that cooled the planet nearly 200 years ago.

This month's night sky is filled with close-range meteors, swirling nebulas, and prime stargazing conditions. Here’s when you should be looking up.

A species that was hunted to local extinction has returned to its natural habitat, say scientists who witnessed the population recovery via satellite imagery.