Mining

Mining

Of or pertaining to the process or business of extracting materials, such as ore or minerals, from the earth's crust.

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terraforming

Astronomy; Mars

Transforming a hostile environment into one able to sustain human life; this includes a source of oxygen, water, plant life, and correct air pressure and temperature.

accretion

Astronomy; General astronomy

1) A process by which a star accumulates matter as it moves through a dense cloud of interstellar gas; or, more generally, whereby matter surrounding a star flows toward it (as in ...