Videos from Yosemite National Park show the iconic "Firefall" phenomenon glowing at Horsetail Fall inside the park.

Guns fired, a mechanical trumpet blared taps, and a folded flag was presented to Craig’s wife, all under a gray, cloudy sky.

From the bright lights and buzzy nightlife of Bangkok to some of Asia's most spectacular beaches, this is how to get the most ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

It’s neither fast nor food, but a spectacular object called HH 30 looks appetizing for astronomers in a new image from the ...

The beauty of Uluwatu sunset in Bali places it at number 11 out of 25 best places to watch the sunset, surpassing the Burj ...

Curiosity, a set of NASA 's robotic "eyes" on the Red Planet, recorded 16 minutes of so-called noctilucent clouds flying ...

Researchers report that a great time to see these clouds from Gale Crater, where Curiosity is located, is the early Autumn.

Contrails conjure a sense of something overwhelming and ineffable, as terrifying as it is beautiful.

While there’s nothing wrong with roses and a box of chocolate, up your game by presenting them to your sweetheart somewhere ...