Here we tried to reproduce the global surface color of Venus as seen by the human eye based on radar imagery from the Magellan spacecraft and surface images by the Venera missions.There are no color global images of the surface of Venus due to its thick atmospheric coverage and colorized radar images are used instead.ere we tried to reproduce the global surface color of Venus as seen by the human eye based on radar imagery from the Magellan spacecraft and surface images by the Venera missions.
A volcano is a vent or chimney which transfers molten rock known as magma from depth to the Earth's surface. Magma erupting from a volcano is called lava and is the material which builds up the cone surrounding the vent. A volcano is active if it is erupting lava, releasing gas or generates seismic activity.
Category: Volcanoes grow by intrusion and extrusion. An intrusion is magma that moves up into a volcano without erupting. Like a balloon, this causes the volcano grows on the inside. An extrusion is an eruption of material that causes the volcano to grow on the outside.Volcanoes are constructed this way mainly of two materials: lava and ash. Another kind of volcano is called either a stratovolcano or composite-volcano. Mt. St. Helens, Pinatubo, and Fuji are all stratovolcanoes.n intrusion is magma that moves up into a volcano without erupting. Like a balloon, this causes the volcano grows on the inside. An extrusion is an eruption of material that causes the volcano to grow on the outside.