Nasa confirms Voyager 1 probe has LEFT the solar system 35 year after its mission to explore space began

• Drastic changes in radiation levels measured by the probe confirm it has finally travelled beyond the influence of the Sun
• Researchers still unsure whether Voyager 1 has reached interstellar space or entered a separate, undefined region beyond the solar system
• Voyager 1 and its sister probe Voyager 2 launched 35 years ago on a tour of the outer planets

Thirty-five years after its launch, Voyager 1 has left the solar system.

Researchers say drastic changes in radiation levels measured by the probe confirm it has travelled beyond the influence of the Sun.

Mission scientists today confirmed the probe is ‘in a new region’ - although scientists are continuing to debate whether Voyager 1 has reached interstellar space or entered a separate, undefined region beyond the solar system.