Our Sun Moves More Slowly Than Thought
The sun is zipping through interstellar space more slowly than once thought, suggesting the giant shock wave long suspected of existing in front of the sun is not actually there, researchers say. These new findings may influence what scientists know about high-energy cosmic rays that can endanger astronauts, they added. The sun and its planets are cocooned within a bubble of charged particles and magnetic fields known as the heliosphere. The edge of the heliosphere, where it collides with interstellar gas and dust, is called the heliopause, and marks the outer limit of the solar system....