The study, published in Nature, found Earth’s nighttime brightness rose by 16 per cent over the period examined. Yet the headline figure masks a fractured map. Researchers said many places did not ...

His job was to uncover secrets from the unknown. But his curiosity opened doors that the government preferred to keep closed.

A rare, long-period comet is making its first appearance in 170,000 years this month, and skywatchers in the Northern ...