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Terraria ( / təˈrɛəriə / ⓘ [1]) is a 2011 action-adventure sandbox game developed by Re-Logic. The game was first released for Windows and has since been ported to other PC and console platforms. The game features exploration, crafting, building, painting, and combat with a variety of creatures in a procedurally generated 2D world ...
Asteroid laser ablation is a proposed method for deflecting asteroids, involving the use of a laser array to alter the orbit of an asteroid. Laser ablation works by heating up a substance enough to allow gaseous material to eject, either through sublimation (solid to gas) or vaporization (liquid to gas). For most asteroids this process occurs ...
Asteroid mining is the hypothetical extraction of materials from asteroids and other minor planets, including near-Earth objects. [1] Notable asteroid mining challenges include the high cost of spaceflight , unreliable identification of asteroids which are suitable for mining, and the challenges of extracting usable material in a space environment.
Siderite is a mineral composed of iron (II) carbonate (FeCO 3 ). Its name comes from the Ancient Greek word σίδηρος ( sídēros ), meaning "iron". A valuable iron ore, it consists of 48% iron and lacks sulfur and phosphorus. Zinc, magnesium, and manganese commonly substitute for the iron, resulting in the siderite- smithsonite, siderite ...
Map all coordinates using OpenStreetMap. This list of impact structures on Earth contains a selection of the 190 confirmed craters given in the Earth Impact Database as of 2017. [1] [a] To keep the lists manageable, only the largest impact structures within a time period are included. Alphabetical lists for different continents can be found ...
Oldest dated rocks. The Moon rock "Big Bertha", collected on the 1971 Apollo 14 mission, contains an Earth meteorite that is 4 billion years old. The oldest dated rocks formed on Earth, as an aggregate of minerals that have not been subsequently broken down by erosion or melted, are more than 4 billion years old, formed during the Hadean Eon of ...
A range of densities for the crust and mantle can be calculated from the types of meteorite thought to have impacted Ceres. With CI-class meteorites (density 2.46 g/cm 3 ), the crust would be approximately 70 km (40 mi) thick and have a density of 1.68 g/cm 3 ; with CM-class meteorites (density 2.9 g/cm 3 ), the crust would be approximately 190 ...
MATS/1.4 mine. The MATS/1.4 is a scatterable Italian circular, plastic-cased minimum metal blast-resistant anti-tank blast mine. It uses a pneumatic fuze which is resistant to shock and blast. The mine's plastic case is waterproof, and the mine can be scattered from a helicopter travelling at up to 200 km/h. The mine is normally tan -colored.