Space for Kids - Mars' valleys and volcanoes
Pictures sent back by spacecraft such as ESA's Mars Express show that Mars has many large impact craters. Most of these are to the south of the equator. They seem to have been made by meteorites crashing onto the surface billions of years ago. The largest crater is about 1800 km across – large enough to swallow half of Europe.
Neptune from Voyager 2
Description: This picture of Neptune was produced from the last whole planet images taken through the green and orange filters on the Voyager 2 narrow angle camera. The images were taken at a range of 4.4 million miles from the planet, 4 days and 20 hours before closest approach. The picture shows the Great Dark Spot and its companion bright smudge; on the west limb the fast moving bright feature called Scooter and the little dark spot are visible. These clouds were seen to persist for as…
Researchers Have Found Evidence of Two New Moons Orbiting Uranus
Researchers believe that the moons (if they exist) likely have diameters of only 4 to 14 km (2 to 9 miles) and reflect hardly any light. The new discovery highlights how little we know for sure about our solar system and how much more research still needs to be done.