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.
If the magma reaches the surface it is called lava and lava accumulates to make a volcano.   Volcanoes grow by intrusion and extrusion. An intrusion is magma that moves up into a volcano and then it stops, never erupting.This way the volcano grows on the inside. An extrusion is an eruption.es, Most active volcanoes release sulfur dioxide and carbon  dioxide into the atmosphere, which causes air pollution. Some  componetents of volcanic ash may be toxic as wel â¦ l.