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| NASA spacecraft makes crashing finale into Mercury |
Flight Control at the Johns Hopkins University Applied Physics Laboratory in Maryland before it is estimated that the apostle, traveling more than 8700 miles per hour (14,000 kilometers per hour), land near the north pole of Mercury at 03:26 EDT (1926 GMT) reached.
Messenger, no more fuel to maneuver, combat downward pressure until the sun influences the planet's surface gravity. This is likely to be 52 feet (16 meter) crater on Mercury's injured cheated
During his final weeks in orbit, Messenger relay details about the inner planets of the solar system, which turns out to have ice in some craters that, despite the very hot place more than twice as close to the The sun as Earth.
Lead researcher Sean Solomon, a Columbia University in New York. "We've been getting a lot of data on the ground, focus", wrote an email. "We have a year to think about the meaning of the measure."
Messenger, or surface, space environment, geochemistry, and a range of craft, made of the first studies of the spacecraft Mariner 10, NASA Mercury three times in the mid-1970s flew by the planet. Mercury in 2011 after six years it was traveling straight.
During 4104 the orbits of Mercury, Messenger surprising diagnosis of potassium, sulfur and other volatiles to evaporate the planet's surface is probably due to the high temperature of the planet is made. Mercury's average surface temperature of 332 ° F (167 ° C), with a peak of 801 degrees Fahrenheit during the day is (427 degrees Celsius.)
Messenger also ice and other materials, possibly even organic carbon on the floor of the crater where the sun never shines confirmation. Solomon said, during his last days, the apostle to peer directly into the target hole.
It also found evidence of past volcanic activity and signs of shrinking has a liquid core of the planet's dense iron.
"It's mind-boggling how much we do," Deborah Domingue Messenger scientist with the Planetary Science Institute in Tucson, Arizona, said in a statement: "There is such a feeling of satisfaction."
Europe and Japan have joined together in a follow-up mission to Mercury, called BepiColombo, due to launch in 2017.
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