To think of a life with such a singular purpose is both "exhilarating and depressing,'' says Hand, 41, a National Geographic emerging explorer. "The pendulum swings both ways,'' he says.

NASA launched two 12-inch gold-plated copper disks filled with the sounds of children's laughter, heartbeats, and bird calls.

New research on the orbits of these mysterious asteroids near Venus stress the need for better space rock surveillance.

This rare alignment includes the five planets easily spotted with the naked eye: Mercury, Venus, Mars, Jupiter, and Saturn. Each is bright enough to be seen even in light-polluted city skies, with ...

During the 2012 DEEPSEA CHALLENGE expedition to the deepest part of the ocean, scientists spotted fuzzy mats that may be communities of bacteria clinging to the rocks.

Scientists are working to understand the curious phenomena of red sprites, green ghosts and blue jets high above ...

No telescope has basked in the night sky quite like the enormous new Vera Rubin Observatory. Here's what it could reveal about the universe.

Exoplanet HIP 67522 b, fluffed up to the size of Jupiter, circles so close to its star that it’s triggering violent flares — ...

Narrated by English comedian Ross Noble, the documentary series follows the fascinating, if sometimes revolting, behavior of animal species around the globe.