It started with Rachel Carson's popular 1962 book on the dangers of pesticides, "Silent Spring, " and the eye on the planet increased with a photo of the Earth taken from Apollo 8 as it orbited near the moon in 1968.

CNN: STORY HIGHLIGHTS

When illuminated, the kaleidoscope of reflections spring off the hogels and mingle in space, tricking the eye into seeing three dimensions (see box).

FORBES: Magazine Article

Cloaked by the darkness of winter, the hurricane's eye became visible as Saturn's northern hemisphere transitioned into spring.

ENGADGET

The spring from Barrichello's car struck Massa's helmet just above his eye, and his feet are believed to have come to rest on both the throttle and brake, as his car ploughed head-on into a tyre wall at about 125mph.

BBC: Massa set to fly home to Brazil

Massa has fully recovered from the injury, which happened after a spring that had become detached from Rubens Barrichello's Brawn GP car hit him just above his left eye.

BBC: Ferrari's Felipe Massa in emotional return to Hungary