(Image: PA)It is also similar to the plasma density jump experienced by Voyager 1 when it crossed into interstellar space, the researchers added. Among many things, the astronomers are looking to gain a better understanding of how the solar winds - the stream of charge particles coming out of the Sun - interact with the interstellar winds - made up of particles from other stars. While scientists were aware of the inner layer, the presence of the outer layer became evident only after Voyager 2 crossed into interstellar space. He added: "In another five years or so we may not have enough scientific instruments to power it any longer." Dr Kurth believes that both Voyagers "will outlast Earth", adding: "They're in their own orbits around the galaxy for five billion years or longer.

Source: Daily Mirror November 04, 2019 15:56 UTC