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 ...

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

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

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.

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

The first full moon of the year will glide through the sky Monday night. For lucky stargazers in some parts of the world, it ...

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

A newfound "chicken-size" dinosaur, recently unearthed in Wyoming, changes what paleontologists thought they knew about how ...

A 6-planet alignment or parade will form an arc in the early night sky, peaking in it's visibility Jan. 17-18. We let you ...

Cretaceous-era global heat likely caused a genetic split between Northern and Southern Hemisphere lampreys, offering new ...