With SKA, astronomers will have a constant, real-time all-sky radio survey, which could help uncover some of the strangest phenomena in the cosmos. Current radio astronomy is powerful, but a full-sky survey is still limited to about 10 arc seconds. That's a tiny slice of sky — for comparison, this month the planet Venus, at its super-bright huge disc, is between 25 and 37 arc seconds in diameter. Optical sky surveys, which started in the early 20th century with photographic plates, are fairly high-resolution, more like 1 arc second. "If you want a similar resolution with radio telescopes, you have to go to the SKA scale," Wicenec said.