Huns mountains, Namibia
Huns mountains, Namibia. Aerial photograph of the Huns mountains in south Namibia. These ancient mountains were created 600 million years ago and are composed of limestone and marlstone layers. The remains of prehistoric plants and animals have colou
© Bernhard Edmaier/Science Photo Library
Aerial Photography, Africa, African, Canyon, Earth Science, Environment, Erosion, Geographical, Geography, Geological, Geology, Huns Mountains, L Imestone, Marlstone, Mountain, Namibia, Prehistoric Deposit, Rock, Strata, Terrace, Terraced, Valley
Eroded sea arch
Sea arch and a calm sea. This is Durdle Door, near Lulworth Cove in Dorset, UK. A sea arch forms when wave action erodes part of a headland quicker than the rest. Initially, caves form on each side of the headland, cutting deeper until they merge to form an arch. The arch will continue to be eroded by waves, eventually collapsing. In this case the arch has remained while surrounding soft chalk rocks have been eroded away. The name Durdle Door, and the structure itself, is thought to be at least 1000 years old.
© JEREMY WALKER/SCIENCE PHOTO LIBRARY
Eta Carinae nebula, HST image
Eta Carinae nebula. Coloured Hubble Space Telescope (HST) image of part of the Eta Carinae nebula. This large pillar of cold hydrogen gas and dust is the site of star birth. The narrow pillar (pointing towards top left) alone measures one light year in length. Two stellar jets, or Herbig- Haro objects (white streaks) are seen bursting from the cloud. The ultraviolet radiation in these jets, which are formed by the young hot stars, is slowly eroding the pillar. The Eta Carinae Nebula is around 10, 000 light years from Earth in the constellation of Carina. Image taken using Hubble's Advanced Camera for Surveys.
© Nasa/Esa/N.Smith (university Of California, Berkeley)/Hubble Heritage Team (stscl/Aura)/