Tag Archives: heliosphere

May Be Smaller and Rounder than Previously Thought The heliosphere is a giant magnetic bubble that contains our Solar System, the solar wind and the solar magnetic field. Outside the heliosphere is the interstellar medium — the ionized gas and magnetic field that fills the space between stellar systems in …

Many stars show tails that trail behind them like a comet’s tail, supporting the idea that our own Solar System has one too. However, new evidence from NASA’s Cassini, Voyager and Interstellar Boundary Explorer (IBEX) missions suggests that the trailing end of the Solar System may not be stretched out …