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When a soldier is shot on the battlefield

A medic must pack gauze directly into the wound cavity, sometimes as deep as 5 inches into the body, to stop bleeding from an artery

startup called RevMedx, a small group of veterans, scientists, and engineers who were working on a better way to stop bleeding.

According to researchers

, they've found that exposure to short wavelength, or blue light, during the day can improve alertness and overall performance.

previous research has shown that blue light is able to improve alertness during the night, but our new data demonstrates that these effects also extend to daytime

the rover passed over the Red Planet dune without difficulty

They also show some interesting veins and mineral fractures are visible in the vicinity just ahead

The Martian dune lies between two low scarps sitting at the north and south ends.

fresh impact crater dominates this image taken by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter on Nov. 19, 2013.

Researchers used HiRISE to examine this site because the orbiter's Context Camera had revealed a change in appearance here between observations in July 2010 and May 2012

The crater spans approximately 100 feet (30 meters) in diameter and is surrounded by a large, rayed blast zone

New images from NASA's Curiosity Mars rover show Earth shining brighter than any star in the Martian night sky

even includes our moon, just below Earth

The distance between Earth and Mars when Curiosity took the photo was about 99 million miles (160 million kilometers).

Earth shines

in the Martian twilight sky

“A human observer with normal vision, if standing on Mars, could easily see Earth and the moon as two distinct, bright “evening stars,” said NASA

Ever since the first relay for the 1936 summer Olympic games in Berlin, Olympic torches have traditionally been used to carry a burning flame

from Greece to the host country’s stadium

On Nov. 6, 2013 (Nov. 7 UT) a Soyuz TMA-11M rocket launched

Voyager 1 confirms photos of Solar System

FEBRUARY 13

Family Portrait Of The Planets

In 1990, the U.S. space probe Voyager I , while heading out to the edge of the Solar System, at 5:12pm PST began a four-hour series of photographs in a look backward which captured the Sun and six planets. An elongated large mozaic was later made by combining about 60 images. In this first “Family Portrait of the Planets”, the Sun appeared almost star-like and the planets were mere dots. Mercury was too close to the sun to photograph. Mars and Pluto, were too small to resolve. This first record of the Solar System from space may remain the only one for decades to follow. Voyager I had a unique lofty perspective, looking down on the plane in which the planets orbit. It had been steadily climbing since it passed Saturn in 1980, and reached an angle of 32 degrees high above the plane of the solar system

This image shows a

30-meter-wide crater with a rayed blast zone and far-flung secondary material surrounding

Scientists say the impact and resulting explosion threw debris as far as 15 kilometers in distance.

Pluto

In 1930, the planet Pluto was discovered by Clyde Tombaugh, when comparing two photographic plates taken six days apart the previous month. He found a starry speck that changed position between them. The search for Planet X was started three decades earlier (before Tombaugh was born) at Lowell Observatory in Flagstaff, Arizona, by Percival Lowell. Deviations in the positions of Uranus and Neptune were suspected to be due to the gravity of an undiscovered ninth planet. Locating it meant sifting through the millions of star images for one dim dot that moved. Lowell was unsuccessful, but in his will decreed that the hunt should continue. Clyde Tombaugh was a Kansas farmboy when Lowell Observatory director Vesto Slipher hired him in 1929. Pluto was the only planet found by an American

Meteor explosion over Russia with 1,000 injuries

In 2013, a meteor exploded in the sky over Russia's Ural Mountains. It produced a shock wave so intense that about 1,000 people were reported injured, mostly by flying glass fragments. To view the meteor streaking across the sky, many people were at their windows when the sonic boom shattered the glass panes. The meteor was estimated to ;be 2 meters in diameter, with a mass of about 10 tons. It entered the Earth's atmosphere at a hypersonic speed of at least 33,000 mph when it was viewed by residents of Chelyabinsk (a city of 1 million about 930 miles east of Moscow) at about 9:20 am local time, just after sunrise. They saw a thick, white contrail and an intense flash of light ending with a loud thundering sound as the shattering of the meteor blew apart with several kilotons of energy (equivalent to an atomic bomb)