Resources

The Helix Nebula is located in the constellation Aquarius and was formed when a star like sun died

Helix planetary nebula is consisted of matter ejected by dying Sun-like star

Earth is geologically active till today. The volcanic eruptions and the earthquakes have been instrumental in shaping the Earth and the life as we know it

Image of one of the first rainforests on Earth

Schematic presentation of life's evolution on earth during geological periods

Τhe Cambrian period (542-488 million years ago) in a map. In this period the primitive organisms become multicellular animal and plant organisms

Τhe Cambrian period dates back 542-488 million years and during this period the primitive organisms become multicellular animal and plant organisms

Artistic illustration of the Earth's surface in the Late Devonian period. In this geological period appeared the first trees and forests and also the first arthropods

During the Devonian period (416-360 million years ago) three contents were created and the first arthropods appeared

The Mississipian period is the fifth period of the Paleozic Era and the main rock of this period is limenstone in shallow seas

The Ordovician period (588-444 million years ago) in a map. In this period lithospheric plates had been collected and as a result in the south a continent was created, Condwana, while in the north a vast ocean

The Ordovician period (588-444 million years ago) in a map. In this period lithospheric plates had been collected and as a result in the south a continent was created, Condwana, while in the north a vast ocean

During the Pennsylvanian period ideal conditions were created for depositing coal in Europe and Asia

Map of the Permian period (299-251 million years ago). In this period the largest mass extinction took place, as over 90% of all species of life on Earth disappeared

During the Silurian period (444-416 million years ago) the climate of the Earth began to stabilize resulting in melting glaciers and rising sea levels