Voyager 2 spacecraft could be nearing interstellar space: NASA
NASA has said the Voyager 2 spacecraft could be nearing interstellar space about 17.7 billion kilometres from the Earth. NASA said the spacecraft, launched in 1977, has detected an increase in cosmic rays that originate outside our solar system. Once it exits the heliosphere, it will become the second human-made object after Voyager 1 to enter interstellar space, NASA added.