Voyager 1, which is now more than 18 billion kilometres from the sun, has now experienced two out of the three signs of arriving in interstellar space that scientists hoped to see, according to latest data as published in Science magazine. The craft has experienced charged particles disappearing as they zoom away along the Sun’s magnetic field, and cosmic rays from outside zooming in. But it hasn’t yet seen an abrupt change in the direction of the magnetic field, which would prove it’s reached interstellar space and left the Sun’s field behind. “This strange, last region before interstellar space is coming into focus, thanks to Voyager 1, humankind's most distant scout," said Ed Stone, Voyager project scientist at the California Institute of Technology. via The Register.