NASA Mission to Study Giant ‘Halo’ Surrounding Earth | NASA Goddard FriendsofNASA.org: In 1972, Apollo 16 astronauts placed an ultraviolet camera on the Moon that captured the first images of Earth’s geocorona, the light emitted by Earth’s outermost atmospheric layer. A new NASA mission bearing the name of the telescope’s creator, Dr. George R. Carruthers, will launch into space to build on that legacy. From a vantage point roughly one million miles closer to the Sun than Earth is, the Carruther