My alarm went off far too early, but I rose from bed and then ascended — in the dark, in a van on winding roads — Pico do ...

"Have you ever flipped through old photo albums and suddenly found something fascinating hidden in the background of a ...

Are snow-producing clouds an airframe icing risk? The short answer is yes, which might surprise pilots who fly under ...

Two planets stand side by side as the evening twilight continues to delight and colorful stars shine in the sky this week.

We typically think of the Oort cloud as scattered ice balls floating far from the sun, yet still tied to it gravitationally.

The latest photo challenge calls for you to take and send in your best pictures of trees. Here's how to enter.

Good afternoon and Happy Valentine’s Day, readers! Kicking off today’s edition of Daily on Energy, Callie and Maydeen take a look at the latest in the Trump administration’s federal employee layoffs.

NASA’s Curiosity rover has captured breathtaking images of red and green-tinted clouds drifting across the Martian sky. These ...

The zodiacal light shines in the evening as the Moon reaches Last Quarter and skims past Spica and Antares in the sky this ...

At the surface, Mars is a desolate, barren world with a rocky landscape, massive dust storms and extreme temperature swings.

While it is already dimming after a close encounter with the sun, Comet C/2024 G3 (ATLAS) – also called the Great Comet of ...

The area near clouds is often classified as ‘clear sky’, but a new study demonstrates the potential biases of misclassifying ...