NASA's Voyager 2 probe is the second man-made object to have crossed into interstellar space. The probe achieved the feat on November 5, and is aimed to study the outer reaches of the solar system and more.
In April 2011, NASA had declared that Voyager 2 had reached the edge of the solar system, known as heliosheath. This is the region where the planetary forces of interaction cease to exist, but matter would still be bound by the effects of solar wind, that also contains low-frequency radio signals and magnetic disturbances.
Each spacecraft carries a Golden Record of Earth sounds, pictures and messages, which aims to serve as evidence of Earth's civilization.
In September last year, the US space agency celebrated the 40th anniversary of both Voyager 1 and Voyager 2, which have been declared as our ‘eyes’ in outer space. In the case of Voyager 2, each signal take an average of 16 hours and 40 minutes to be received from Voyager 2, as well as from the NASA Jet Propulsion Laboratory, that is monitoring both Voyager missions.
Now, NASA has recently confirmed that Voyager 2 has also crossed into interstellar space. This is not the first spacecraft to have registered this accomplishment, as Voyager 1 is also deep into outer space.