A cool bit of news from beyond Mars this week: Voyager 2 has relayed new info on the shape of the solar system! New data from the spacecraft, published yesterday in Nature, indicates that Voyager 2 passed through the termination shock in the heliosphere back in August/September of last year. Without the jargon, that means that Voyager 2 reached the location where the solar wind goes from super-sonic to sub-sonic, … Continue reading What shape is the solar system?