STEP OUTSIDE at 21.21 TONIGHT
and look at the sky !
Back in August of 2011, NASA launched a spacecraft called Juno on a mission to study Jupiter. With the vast distance between the Earth and Jupiter, NASA scientists had to devise a way to get the spacecraft up to an incredible rate of speed. To achieve the high velocity required scientists used the gravity of the Earth and the sun to slingshot Juno into space at speed ultimately at around 165,000 mph.
The Juno spacecraft has already completed one circuit around the sun and increased its speed from 78,000 mph up to 93,000 mph and then headed back towards Earth to gain even more speed.
Stargazers in South Africa will be able to see Juno cross the nighttime sky with the naked eye. The spacecraft will pass over South Africa at 9:21 PM local time. Astronauts aboard the ISS will also attempt for the first time ever to film a deep space spacecraft approaching the Earth.