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Nasa to launch probe on 7-year mission to go and 'touch' Sun

CAPE CANAVERAL (Florida, USA): Nasa is preparing to send a probe closer to the Sun than any other spacecraft has ever ventured, enduring wicked heat while zooming through the solar corona to study this outermost part of the stellar atmosphere that gives rise to the solar wind. The Parker Solar Probe, a robotic spacecraft the size of a small car, is slated to launch from Cape Canaveral in Florida, with Aug. 6 targeted as the launch date for the planned seven-year mission. It is set to fly into the Sun's corona within 3.8 million miles (6.1 million km) from the solar surface, seven times closer than any other spacecraft.

"To send a probe where you haven't been before is ambitious. To send it into such brutal conditions is highly ambitious," Nicola Fox, a project scientist from the Johns Hopkins University Applied Physics Laboratory, told a news conference on Friday. The previous closest pass to the Sun was by a probe called Helios 2, which in 1976 came within 27 million miles (43 million km). By way of comparison, the average distance from the Sun for Earth is 93 million miles (150 million km).

The project, with a $1.5 billion price tag, is the first major mission under NASA's Living With a Star program. The probe is set to use seven Venus flybys over nearly seven years to steadily reduce its orbit around the Sun, using instruments designed to image the solar wind and study electric and magnetic fields, coronal plasma and energetic particles.

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