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...model reflects reality, by comparing the model's predictions against real-world data. This material forms part of The Open University course S396 Ecosystems... Ecosystems: modelling the Earth A short introduction to this album. Using a model How models can be used to predict the Earth's climate patterns. The acid test The limitations of models; how to measure model error....

...Open University are at the forefront of that work, and for the 50th anniversary have been working with NASA to produce a virtual microscope collection of over 550 rocks collected during the Apollo missions. These detailed images are a starting point for many investigations worldwide and show how important the Apollo samples still are to the scientific community. Indeed,...

...Open University's Science courses and qualifications [Image of die and cores (where applicable) sprayed with mould coat.] 1. Die and cores (where applicable) sprayed with mould coat. Mould heated using gas burners and die lubricant sprayed on. [Image of die parts assembled and clamped, and metal poured into runner.] 2. Die parts assembled and clamped, and metal poured...

...Open University, explores...The Earth is teeming with life and yet we are only one planet, orbiting one star, in a galaxy of over 250 billion stars. Looking even wider into space, we are part of a universe that is a host to at least 200 billion galaxies, each with their respective billions of solar systems. The size of even our galaxy, the Milky Way, leads to questions...