A Soviet spacecraft has returned to Earth
A Soviet space probe stuck in orbit since a failed 1972 launch has finally crashed to Earth. At 9:24 a.m. Moscow time (2:24 a.m. EDT) on May 10, the spacecraft, …
Earth
The nearest single star to Earth has four small planets
The nearest single star to the sun, Barnard’s star, has a brood of planets all its own. The red dwarf star, about six light-years from Earth, hosts four close-in planets …
The ozone layer shields life on Earth. We’ll soon lose a key way to monitor its health
Humankind will soon lose a great deal of vigilance over the ozone layer, which shields life on Earth from harmful solar radiation. The impending loss of NASA’s Aura and the …