Johnny — 2020-11-18 04:39:29 UTC Every now and then, something disturbs one of these icy worlds and it begins a long fall toward our sun. When charged particles from the solar wind become trapped in Earth's magnetic field, they collide with air molecules above our planet's magnetic poles. Asteroids range in size from Vesta - the largest at about 329 miles (530 kilometers) in diameter - to bodies that are less than 33 feet (10 meters) across. The solar wind is a stream of charged particles continuously ejected from the sun. Thus, in its widely varying distances from Jupiter, Io is subjected to tremendous tidal forces. And in the 2007 film Sunshine, the sun is dying, leaving Earth in a state of deep freeze. The moon has a very thin and weak atmosphere, called an exosphere. The icy water particles are roughly one ten-thousandth of an inch, or about the width of a human hair. Mars is a rocky body about half the size of Earth. In fact, Ceres could be composed of as much as 25 percent water.