A once-in-a-lifetime comet is approaching the sun — and it will be visible for the first time in 160,000 years. The comet ...

G3 (ATLAS) should be visible from the southern hemisphere, and possibly also the northern hemisphere, over the next few days ...

NASA's Mars Reconnaissance Orbiter has captured images of kidney bean-shaped frozen sand dunes in Mars' northern hemisphere, ...

How and when did dinosaurs first emerge and spread across the planet more than 200 million years ago? That question has for ...

The Chicago area is less than a month into winter, but many residents may be curious on when spring starts later this year.

A NASA satellite has spotted frozen "kidney beans" on Mars' sand dunes trapped in place until springtime. Photographing them ...

Two coronal mass ejections (CMEs) struck Earth’s magnetic field on New Year’s Eve, bringing out the displays of light in the ...

The Paris-based agency held its supply forecasts for Russia and Iran steady for this month given an uncertain outlook over ...

Comet ATLAS hit a maximum magnitude of -3.4 during its close encounter with the sun, just shy of the brightness of Venus in the night sky.

Paleontologists say the fossils could prove dinosaurs lived in the northern hemisphere millions of years earlier than ...

The discovery of Ahvaytum bahndooiveche, a 230-million-year-old dinosaur in Wyoming, reveals dinosaurs existed in the ...