Two of NASA’s longest-running space missions, Voyager 1 and Voyager 2, have detected a searing-hot region of space where the Sun’s influence ends and interstellar space begins. The probes, launched in ...
At the ragged frontier where the Sun’s influence gives way to the galaxy, a decades‑old spacecraft has stumbled into a ...
After a 35-year journey, Voyager 1 finally reached interstellar space in 2012. The most distant human-made has to venture on ...