TechSmart 121, October 2013 Oct. 2013 | Page 41

THE GEEK GETS DRESSED Scientists recently announced that Voyager 1 has moved beyond the plasma bubble surrounding our sun. Interstellar space, as this region is known, is uncharted territory. The space probe’s entry into interst ellar space is regarded as one of the greatest exploration achievements of humankind, on par with circumnavigating the globe and taking a step on the Moon. And all of this with technology dating from the late 1970s. To in?nity and beyond! 150 million km The distance from the sun to the Earth. About 19 billion km The distance of Voyager 1 from the sun, or just over 11 million trips between Joburg and Cape Town. 400 W: The amount of power needed to run the electronics and heaters on board Voyager 1. 115 images and 55 languages: Recorded on the Golden Records as a message from Earth to other life in outer space. 13 000 km/?: Fuel efficiency of a Voyager spacecraft. 30 000 years: The time it will take Voyager 1 to reach the outer edge of the Oort cloud, regarded as the official edge of our solar system. 35 years: The time it took Voyager 1 to reach interstellar space. 8 years: The estimated remaining time before the last instrument onboard Voyager 1 will be switched off. This means Voyager 1 will have been sending data to Earth for 44 years, way longer than originally expected. [LP] About 70 kb: The memory capacity of Voyager 1. A current-generation smartphone typically has 240 000 times as much memory. 5 trillion bits: The total amount of data sent to Earth by the two Voyager spacecrafts. 65 000: The number of parts used to build Voyager 1. 17 hours: The time it takes for a signal from Voyager 1 to reach Earth. Data is sent to Earth at about 160 bits/second. 2 000: The approximate number of parts in a colour TV. October 2013 | TechSmart 39