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Earth’s ozone hole shrivels to smallest since 1988

WASHINGTON — The ozone hole over Antarctica shrank to its smallest peak since 1988, NASA said Thursday.

The huge hole in Earth’s protective ozone layer reached its maximum this year in September, and this year NASA said it was 7.6 million square miles wide (19.6 million square kilometres). The hole size shrinks after mid-September.

Scientists witness huge cosmic crash, find origins of gold

WASHINGTON — It was a faint signal, but it told of one of the most violent acts in the universe, and it would soon reveal secrets of the cosmos, including how gold was created.

Astronomers around the world reacted to the signal quickly, focusing telescopes located on every continent and even in orbit to a distant spot in the sky.