Modern mountain climbers typically carry tanks of oxygen to help them reach the summit. It's the combination of physical exertion and lack of oxygen at high altitudes that creates one of the biggest challenges for mountaineers.
From the International Space Station, NASA astronaut Terry Virts (@AstroTerry) took this photograph of an early morning sunrise over the Grand Canyon and posted it to social media on May 10, 2015.
When we think of spaceflight, we think astronauts. You're a human, you perceive the Universe with your human-centric attitudes. You… specist.
For the first time, a natural source of infrasonic waves of Earth has been measured directly from space—450 kilometers above the planet's surface. The source was the massive 2011 Tohoku-Oki earthquake in Japan, and its ...
Federal aviation officials, battered by complaints that bureaucratic hurdles are preventing industry from realizing the economic benefits of drones, announced Tuesday they are streamlining rules to expedite permits to fly ...
A meteor moving at 45,000 mph lit up the sky over western Pennsylvania.
Plumes seen reaching high above the surface of Mars are causing a stir among scientists studying the atmosphere on the Red Planet.
The European Space Agency has sent its Rosetta probe in for a close look at the comet it's been tracking for months, a swoop that scientists hope will provide them with detailed measurements and photos of its surface.
This ghostly puff of smoke is actually a mass of swirling gas and cloud at Venus' south pole, as seen by the Visible and Infrared Thermal Imaging Spectrometer (VIRTIS) aboard ESA's Venus Express spacecraft.