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A drawing showing the Leonid meteor shower in 1833 as depicted by Europeans

Leonids shower over the SoBaekSan National Korean Observatory during the second Leonid peak started at 3:50 am local time in 2001

A drawing showing the Leonid meteor shower in November 1833, the biggest shower that has ever been observed

View of a Leonid fireball, which is an especially bright meteor and produce the annual Leonid meteor shower

Artist's conception of the Lick Observatory on Mt. Hamilton in California and some of its discoveries, such as the spiral nebulae

A symbolic illustration of life in space, in which a spiral galaxy metamorphoses into the DNA double helix

The largest mammals, whales, eat some of the smaller sea creatures like krill.

Most life forms found near the ocean surface, as plants, need sunlight and most animals depend on them.

The complex organic molecules are the ingredients for life on earth

Image of the Manicouagan Reservoir, a lake in Quebec which was created by a meteor collision with Earth

Artist's impression of the travel from the Earth and Moon towards Mars

The natural satellites of Mars, Phobos and Deimos discovered in 1877 and they are the smallest satellites of the solar system

Picture of Milky Way galaxy to which the solar system and Earth belong

Europa, the fourth among the largest satellites of Jupiter and a view of its surface

Phoebe, is one of the outer satellites of Saturn and appears to be roughly circular in shape