The Solar Probe Plus is scheduled for a 2015 launch into a close orbit of the Sun. Solar Probe Plus will come closer to the Sun than any spacecraft has ever flown - and what it finds could revolutionize what we know about our star and the solar wind that influences everything in our solar system. Solar Probe will use seven Venus flybys over nearly seven years to gradually shrink its orbit around the Sun, coming as close as 4.1 million miles (6.6 million kilometers) to the Sun, well within the orbit of Mercury and about eight times closer than any spacecraft has come before.

The file includes 1:40 and 1:24 scale (approximately) versions. Scale is somewhat indefinite as the probe is still mutating in design. For more information see the mission web site at: http://solarprobe.jhuapl.edu/index.php