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For more than a decade, scientists have wondered about the nature of the dark material that coats long, linear fractures and other relatively young geological features on Europa's surface.

Its association with young terrains suggests the material has erupted from within Europa, but with limited data available, the material's chemical composition has remained elusive.

To identify the dark material [url=http://www.mancityfootballpro.com/Women-John-Stones-Manchester-City-Jersey/]John Stones Jersey[/url] , researchers at NASA's Jet Propulsion Laboratory created a lab setup that mimics conditions on Europa's surface in terms of temperature, pressure and radiation exposure.

For this study, the researchers tested samples of common salt -- sodium chloride -- along with mixtures of salt and water, in their vacuum chamber in accordance with Europa's chilly surface temperature of minus 280 degrees Fahrenheit (minus 173 degrees Celsius).

They then bombarded the salty samples with an electron beam to simulate the intense radiation on the moon's surface.

After several days of exposure to this harsh environment, which corresponds to as long as a century on Europa, the salt samples' color turned from white to yellowish-brown, which is similar to features on the icy moon.

Additionally [url=http://www.mancityfootballpro.com/Women-Danilo-Manchester-City-Jersey/]Danilo Jersey[/url] , the longer the samples were exposed to radiation, the darker the resulting color, they found.

"The presence of sea salt on Europa's surface suggests the ocean is interacting with its rocky seafloor -- an important consideration in determining whether the icy moon could support life," NASA said in a statement.

The study was published online in the U.S. journal Geophysical Research Letters.

ANKARA, Jan. 22 (Xinhua) -- A suicide car bomb at the gate of a Mogadishu hotel, where a Turkish delegation was having meetings, in the capital of Somali on Thursday killed at least three people [url=http://www.mancityfootballpro.com/Women-Kyle-Walker-Manchester-City-Jersey/]Kyle Walker Jersey[/url] , officials from Turkish Foreign Ministry told Xinhua.

There are no casualties among the Turkish delegation, the officials said.

The car bomb exploded when the Turkish delegation was having meetings for the upcoming visit of Turkish President Recep Tayyip Erdogan to Somalia on Friday.

Only one member of the Turkish delegation was slightly wounded due to broken glasses of the hotel, the officials said.

Al-Shabaab militants, which attacked a house of Turkish embassy staff in Mogadishu with a car bomb and killed three people, claimed the responsibility for the attack on Thursday.

Minutes after the attack, Turkish Prime Minister Ahmet Davutoglu told reporters that an investigation had been launched to reveal whether the attack "directly targeted" the Turkish delegation.

Turkish President Recep Tayyip Erdogan would go ahead with his trip, Davutoglu added.

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