Artificial Eclipses on Demand: ESA's Proba-3 Breakthrough
Hundreds of millions of people will witness next week's total solar eclipse across North America, and solar physicists from around the globe are flocking to join them. Eclipses offer a brief glimpse of the Sun's ghostly surrounding atmosphere - the solar corona - normally kept invisible by the Sun's sheer glare. But the corona will soon be opened up for more sustained study: today in Belgium ESA