SCIENCE IN THE NEWS DAILY
Giant Tornadoes Seen Erupting From the Sun
from National Geographic News
The sun produces giant tornado-like jets that stretch thousands of miles into space, new satellite data shows. The solar tornadoes typically last about ten minutes and occur near the sun's poles.
"These solar tornadoes are almost a thousand times faster than a terrestrial tornado and are very big," said Spiros Patsourakos, a researcher at George Mason University.
Scientists have known since the 1990s that jets of gas wider than North America were erupting from the sun's poles, but it is only now that they discovered these jets are rotating. That's because a new pair of NASA satellites called STEREO allowed the features to be observed from two directions at once, revealing their three-dimensional structures.
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PODCAST & VIDEO: 3D Printing Replacement Body Parts
Regenerative medicine, a fledgling field with the aim of regrowing parts from a person’s own cells, is being amplified with 3D-printing technology, which can now use organic materials to create scaffolds that cells need to grow into their final forms. Richard Wysk, a professor of industrial and systems engineering at North Carolina State University, discusses the latest successes with this research, and the timeline for creating more complicated structures.
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