The largest Canyon in Mars

Huge valleys can survive for millions of years in Mars since there is no running water to wear away the rocky landscape.

The Valles of Marineris (Mariner Valleys) is the largest canyon, it was discovered by the space probe Mariner 9.

This valleys was most likely caused by erosion. It is 4,000 kilometers long and four times as deep as the Grand Canyon in the United States.

The Ice of Saturn

Shining rings of Saturn are actually tiny chips of ice, rock and dust sorrounding the planet. The rings reflect light and often is seen through from the earth.

Venus

Conditions in the Planet Venus are too extreme for life. Though in the early times writers thought that life could have existed in the planet.

A study on the said planet showed that its atmosphere is mostly poisonous carbon dioxide and sulphuric acid. Is surface cannot be seen due to its thick atmoshphere. However, enough sunlight penetrates the planet and raises the temperature to 480 degrees centigrade.

Due to its atmosphere, the sun's light is reflected making the planet appear very bright when viewed from Earth.