Did you know that sun is constantly giving off a huge amount of matter and energy? Learn about how solar winds and storms create space weather in this video. [2:48]

A series of journal articles published this week draw a new picture of our solar system's heliosphere, the bubble carved out in the interstellar medium by the solar wind.

New research suggests that the solar wind is weaker now than it has been in the past. What does that mean, and why does it matter?