NASA Voyager Missions: 

• NASA’s  Voyager is continuing its journey beyond our Solar System, 45 years after it was launched. But now the veteran spacecraft is sending back strange data, puzzling its engineers. A glitch is said to be behind this.
• The glitch has to do with Voyager 1’s attitude articulation and control system, or AACS, which keeps the spacecraft and its antenna in the proper orientation.
• Preliminary analysis suggests that the craft is confused about its location in space.

About Voyager mission:

• Launched in the 1970’s, and the probes sent by NASA were only meant to explore the outer planets – but they just kept on going.
• Voyager 1 departed Earth on 5 September 1977 and Voyager 2 left our solar system in 2013.
• Voyager 2 is the only spacecraft to have visited all four gas giant planets — Jupiter, Saturn, Uranus and Neptune — and discovered 16 moons, as well as phenomena like Neptune’s mysteriously transient Great Dark Spot, the cracks in Europa’s ice shell, and ring features at every planet.