Experts say the sun is surrounded by a ‘bubble’ of solar wind

IMG_0175.JPGSome suspect the sun’s magnetic fields trail behind it like a cosmic tail – but, new research spanning an entire 11-year solar cycle suggests the structure may instead be more of a ‘bubble.’ Combining measurements from NASA’s Cassini mission, two Voyager spacecraft, and the Interstellar Boundary Explorer, researchers found that our solar system may be enveloped by a nearly spherical sheath. This is the result of the sun’s constant stream of solar wind, which creates a bubble roughly 23 billion miles across as it pours into space. Combining measurements from NASA’s Cassini mission, two Voyager spacecraft, and the Interstellar Boundary Explorer, researchers found that our solar system may be enveloped by a nearly spherical sheath……Read More