It dwarfs every volcano on Earth, painting a picture of ... Depending on its temperature and composition, lava can glimmer in ...

Venus — a hot planet pocked with tens of thousands of volcanoes — may be even more geologically ... depending on location), temperature and rock composition to keep that conveyor belt running. To ...

Chemical composition of ancient rocks Iron sulfide ... Type of Evidence Analysis of gases from modern volcanoes What it tells scientists Carbon dioxide and water vapour are released by volcanoes ...