NASA reported last year that “if anything,” the Sun contributed “a very slight overall cooling in the past 25 years.” Despite that many man-made global warming deniers will try tell … [Read full article]
The Earth’s upper atmosphere expands and contracts a bit naturally. But a recent record-breaking collapse has scientists confused.
Our Sun is experiencing the most prolonged period of minimal sunspot activity in nearly a century. The puzzling absence of these spots, whose build-up commonly signals the occurrence of large solar storms and flares, has space scientists and solar physicists searching for explanations.