NASA’s Dawn spacecraft travelled four years to reach the asteroid Vesta, located in the asteroid belt between the orbits of Mars and Jupiter.

Jupiter’s Galilean moon Io is the most volcanically active body in the solar system.

Enceladus is a tiny moon orbiting just outside the rings of Saturn. NASA’s space probe Cassini has helped scientists study the very surprising moon.

The Cassini spacecraft’s radar instruments have been monitoring the hydrocarbon lakes in the southern polar region on Saturn’s largest moon Titan since 2004.

At very high altitudes in the Earth’s atmosphere, dust samples were collected by high-flying aircraft.

NASA’s Lunar Reconnaissance Orbiter has a special instrument called the Diviner Lunar Radiometer Experiment that is mapping the temperatures on the moon.

The Apollo astronauts brought back a magnetized moon rock, one of the oldest and most beautiful rocks with bright green and milky white crystals.

Both asteroids and comets are rocky or icy solar system objects ranging in size from less than a half a mile to many hundreds of miles wide.

The Cassini spacecraft has discovered giant geysers on Saturn’s moon Enceladus. The geysers jet out at a distance three times the size of the moon.

Two Canadian scientists from the University of British Columbia believe that some meteorites on Earth could have come from Mercury.