Telescopes around the world are now tracking a new visitor to our celestial neighborhood. Streaking through at a speed and trajectory that not even the Sun's immense gravity can capture, we will only ...

At the ragged frontier where the Sun’s influence gives way to the galaxy, a decades‑old spacecraft has stumbled into a furnace that theory did not predict. As Voyager pushes through the heliopause, ...

Astrophysicists are mapping a vast, hidden structure in the gas around the Sun that behaves like a tunnel carved through interstellar space, potentially linking our solar system to distant stars.