Cosmic rays are invisible, high-energy particles that constantly bombard Earth from all directions. Most cosmic rays are protons moving at extremely high speeds, but they can be atomic...
Comets are basically “snowy dirtballs” or “dirty snowballs”—collections of rocky material, dust, and frozen water, methane, and ammonia that move through the solar system in long, highly elliptical...
Asteroids are relatively small, primarily rocky or metallic chunks of matter that orbit the Sun. They are like planets, but much smaller; the largest asteroid, Ceres, is only about...
Kuiper Belt or the Kuiper-Edgeworth Belt is a doughnut-shaped region that extends between about three to eight billion miles (5 to 12 billion kilometers) out from the Sun...
Neptune is the eighth major planet in our solar system, 17 times more massive than Earth and about four times its diameter. The most remote of the four...
Uranus is the seventh major planet in our solar system, and the third of four gas giant planets. It is 51,200 kilometers in diameter, just under four times...
Jupiter is the largest planet in solar system, twice as massive as all the other planets, moons and asteroids in solar system put together. More than 90 percent...
