News

Saturn’s clouds run deep, rings may rain organics

Saturn’s clouds have roots deeper inside the planet’s atmosphere than scientists previously thought, and Saturn’s rings — now believed to have formed in the last 200 million years — appear to be raining organic molecules down on the planet, according to observations made by NASA’s Cassini spacecraft last year in the final weeks of its mission.

Ariane 5

Ariane 5 returns to service with dual-satellite launch

Boosted by two solid-fueled motors and a hydrogen-burning main engine, a European Ariane 5 rocket took off Thursday from French Guiana with a Japanese military communications payload and a U.S.-built, British-owned broadband satellite, returning to service after a January mission placed two spacecraft in the wrong orbit.