Floating around at the edge of the Solar System are leftovers from its formation. This is the Kuiper Belt, which is composed of chunks of rock and ice like comets, dwarf planets, and random objects ...

What happens to the human body in deep space? Bone and muscle deterioration ... such coronal mass ejections -- plasma clouds from the Sun -- but cosmic radiation remains unpredictable. "Shielding is ...

To counteract this, astronauts use three exercise machines on the ISS, including a 2009-installed resistance device that simulates free weights using ... plasma clouds from the sun—but cosmic ...