The system, observed using the European Space Agency's Cheops space telescope, consists of four planets — two rocky and two ...

For decades, scientists have believed that planetary systems typically form with rocky planets close to their star and gas-rich planets farther away. This discovery questions their knowledge.

China's sweeping efforts to clean up its air have delivered one of the biggest public health success stories of recent decades. Since the Air Pollution Prevention and Control Action Plan was launched ...

Lava tubes aren't new to our solar system; they've hinted at volcanic pasts on Mars and the Moon. But spotting them ...

A recent analysis of decades-old radar data from Venus has revealed evidence of a large subsurface cavity caused by volcanic ...