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Gross domestic product ( GDP) is a monetary measure of the market value [ 2] of all the final goods and services produced and rendered in a specific time period by a country [ 3] or countries. [ 4][ 5][ 6] GDP is often used to measure the economic health of a country or region. [ 3] Definitions of GDP are maintained by several national and ...
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 ...
Space colonization is the use of outer spacefor colonization, such as permanent habitation, exploitation or territorial claims. Extraterrestrial colonization is its broader form, including the use of celestial bodies, other than Earth, for interplanetary colonization. The inhabitation and territorial use of extraterrestrial space has been ...
Iridium is a chemical element; it has symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, it is considered the second-densest naturally occurring metal (after osmium) with a density of 22.56 g/cm 3 (0.815 lb/cu in) [ 8] as defined by experimental X-ray crystallography. [ a] 191 Ir and 193 ...
Tea is an aromatic beverage prepared by pouring hot or boiling water over cured or fresh leaves of Camellia sinensis, an evergreen shrub native to East Asia which probably originated in the borderlands of southwestern China and northern Myanmar. [ 3][ 4][ 5] Tea is also made, but rarely, from the leaves of Camellia taliensis. [ 6][ 7][ 8] After ...
ChatGPT is a chatbot and virtual assistant developed by OpenAI and launched on November 30, 2022. Based on large language models (LLMs), it enables users to refine and steer a conversation towards a desired length, format, style, level of detail, and language. Successive user prompts and replies are considered at each conversation stage as context.
Algae fuel. A conical flask of "green" jet fuel made from algae. Algae fuel, algal biofuel, or algal oil is an alternative to liquid fossil fuels that uses algae as its source of energy-rich oils. Also, algae fuels are an alternative to commonly known biofuel sources, such as corn and sugarcane. [1] [2] When made from seaweed (macroalgae) it ...
The pound ( sign: £) is the main unit of sterling, [ 4] and the word pound is also used to refer to the British currency generally, [ 5] often qualified in international contexts as the British pound or the pound sterling. [ 4] Sterling is the world's oldest currency in continuous use since its inception. [ 6]