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Supernova 'Shock Breakout' Seen From Red Giant - A First
from National Geographic News
The ultraviolet flash that signals the explosion of a red supergiant star has been detected by astronomers for the first time.
"We have witnessed the violent death of a massive star in a galaxy almost a billion light-years away in unprecedented detail," said study team member Kevin Schawinski, an astrophysicist at the University of Oxford in the U.K.
The discovery comes just weeks after an independent team reported the first sighting of x-ray light from a star just as it was beginning to explode. Seeing such "first light" from supernovae could help astronomers better understand what's happening inside massive stars in their final moments.
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VIDEO: How Hair Ice Grows
In 2013, American Scientist featured an article on odd ice formations on plant stems, including these curling ribbons of ice. One of the types of ice discussed in the article was hair ice—long, thin strands of ice that grow under quite specific conditions. The only problem is that a new study shows the theory put forth at the time—that gas pressure pushes the water out—isn’t correct... (click the link above to read more).
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