Scientists have detected a narrow structure of hot plasma extending from the Local Hot Bubble surrounding the Sun toward distant regions of the galaxy. The newly observed feature, described as a ...

At the farthest edge of the Sun’s influence, the Voyager probes have stumbled into something that sounds almost mythic: a sheath of gas heated to tens of thousands of degrees, a kind of invisible ...

Voyager 1, launched in 1977, has traveled farther than any spacecraft in human history. After more than four decades of silent endurance through space, it now sails beyond the orbit of the outer ...