Astronomers spot 3,000 light-year 'light echo' of dying supermassive black hole

A Major Prediction Stephen Hawking Made About Black Holes Has Finally Been Observed

Cleaner air has boosted U.S. corn and soybean yields, Stanford-led research shows. The analysis estimates pollution reductions between 1999 and 2019 contributed to about 20 percent of the increase in corn and soybean yield gains during that period – an amount worth about $5 billion per year.

In Photos: Angry Sun, A Blue Martian Sunset And Weird ‘Dolphin Head ’ Star In ‘Astronomy Photographer Of The Year’ Entries