The article examines the origins of ocean salinity through processes like weathering, erosion, volcanic activity, and ...

Meteorological summer began on Sept. 1, but astronomical autumn is Sept. 22 at 8:44 a.m., what we call the autumnal equinox.

A mix of sun and clouds will return to the Pacific Northwest Friday. The below-average temperature trend keeps Portland and ...

You might think of asteroids as just rocks of various sizes floating around in space. But they’re vastly more complex than ...

A busy series of northern lights activity will soon come to a peak as the sun reaches its solar maximum stage in the coming ...

I f astronomers had been walking the Earth 466 million years ago, they may have had something special to see. The moon and ...

On Sept. 22, the fall equinox formally heralds in autumn and marks the end of summer in the Northern Hemisphere.

The official first day of fall, otherwise known as the autumnal equinox, is this weekend in the Northern Hemisphere. According to Encyclopedia Britannica, it is one of only two days, the other being ...

We know Mars once had an active geological past, filled with water, volcanic activity, and dynamic geological changes. Now, ...

When we think of planets with rings, Saturn often comes to mind. However, new research suggests that Earth might have had its ...

I cannot endure to waste anything so precious as autumnal sunshine by staying in the house.” — Nathaniel Hawthorne In another ...

Fall equinox 2024 arrives on Sunday2. Find out why the first day of autumn still features a little more daylight than ...