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Earth Defense Force
Earth Defense Force (Chikyū Bōeigun) is a Sandlot/D3Publisher third-person shooter series begun in 2003 on PS2, pitting four soldier classes against giant alien hordes; EDF5 sold 1 million, EDF6 (2022) has 147 missions.
Earth Girls Are Easy
Earth Girls Are Easy is a 1988 sci-fi musical comedy directed by Julien Temple, based on Julie Brown's 1984 song, starring Geena Davis, Jeff Goldblum, Jim Carrey, and Damon Wayans as aliens in the San Fernando Valley.
Earth Hour
Earth Hour is an annual WWF campaign in which households and landmarks switch off non-essential lights for one hour on a Saturday in March to show concern about climate change.
Earth Liberation Front
Earth Liberation Front (ELF), radical environmental network founded 1992 in Brighton, England by former Earth First! members; decentralized leaderless cells using arson and sabotage; FBI's top domestic terror threat; no fatalities.
Earth lodge
An earth lodge is a circular, dome-shaped dwelling with a timber frame covered in earth, built by Plains farming tribes such as the Mandan and Pawnee.
Earth mass
Earth mass is the total mass of Earth, about 5.9722 × 10^24 kilograms, used as the standard unit for comparing the masses of planets, moons, and exoplanets.
Earth mover's distance
The earth mover's distance (EMD), also called the Wasserstein-1 distance, is a distance between probability distributions, defined as the minimum cost of moving mass from one to the other.
Earth observation satellite
An Earth observation satellite is an uncrewed spacecraft that images Earth's surface or atmosphere from orbit, using passive optical sensors and active radar and lidar.
Earth Observing-1
Earth Observing-1 (EO-1) was a NASA satellite launched in 2000 to flight-test new technologies under the New Millennium Program; planned for one year, it operated for 16 years until 2017.
Earth potential rise
Earth potential rise (EPR), also called ground potential rise, is the voltage an earthing system, such as a substation ground grid, attains relative to remote earth during a fault.
Earth pressure balance shield
An earth pressure balance (EPB) shield, or EPB shield, is a tunnelling machine that supports the tunnel face with its own excavated soil, conditioned with additives and pressurized.
Earth pressure balance tunnel boring machine
An earth pressure balance (EPB) tunnel boring machine supports the tunnel face with pressurized excavated soil, widely used in urban soft-ground tunnelling to limit settlement.
Earth Radiation Budget Satellite
The Earth Radiation Budget Satellite was a NASA Earth observation satellite launched in 1984 to measure Earth's energy balance and ozone, reentering in 2023 after 38 years.
Earth radius
Earth radius is the distance from Earth's center to its surface, ranging from 6,357 km at the poles to 6,378 km at the equator, first measured by Eratosthenes.
Earth Return Orbiter
The Earth Return Orbiter is a European Space Agency spacecraft that would capture a container of Martian samples in Mars orbit and carry it back to Earth.
Earth science
Earth science, also called geoscience, is the study of the Earth, its solid interior, oceans, atmosphere, and life, covering geology, meteorology, oceanography, and astronomy, unified by plate tectonics.
Earth Science Analytics
Earth Science Analytics is a Norwegian petroleum-geoscience software company in Stavanger, founded in 2016, whose EarthNET platform uses AI to predict subsurface rock and fluid properties.
Earth sensor
An Earth sensor is a spacecraft attitude sensor that determines a satellite's orientation by detecting the Earth's limb against deep space, usually in the infrared.
Earth shelter
An earth shelter is a building insulated with soil heaped against its walls or covering its roof, a technique revived by the 1970s energy crisis.
Earth Similarity Index
The Earth Similarity Index (ESI) is a numerical scale from 0 to 1 comparing a planet's physical properties with Earth's, introduced in 2011 to screen exoplanets.
Earth Simulator
The Earth Simulator (地球シミュレータ) is a series of supercomputers run by JAMSTEC in Yokohama, Japan, for global climate and ocean simulation; built by NEC, its first generation was the world's fastest computer from 2002 to 2004.
Earth Song
Earth Song is Michael Jackson's 1995 environmental anthem, the third single from HIStory, written from 1988 as "What About Us". It was his sixth UK Number 1 and 1995's UK Christmas Number 1, with a Nick Brandt video of over 523 million views.
EARTH study
The Environment and Reproductive Health (EARTH) Study is a preconception cohort study at Massachusetts General Hospital in Boston investigating how environmental, nutritional, and lifestyle factors affect fertility and pregnancy outcomes.
Earth Summit
Earth Summit (UNCED), Rio de Janeiro, 3–14 June 1992: UN conference of 179 countries that adopted the Rio Declaration, Agenda 21, UNFCCC, and the Convention on Biological Diversity, launching the sustainable development framework followed by Rio+5, Johannesburg 2002, and Rio+20 2012.
Earth tide
The Earth tide, or solid Earth tide, is the elastic deformation of the solid Earth, up to about 10 cm, caused by the gravity of the Moon and Sun.
Earth to Ned
Earth to Ned is a Disney+ celebrity talk show hosted by puppet aliens Ned and Cornelius, produced by The Jim Henson Company; premiered September 4, 2020, 20 episodes total.
Earth trojan
An Earth trojan is an asteroid that co-orbits the Sun with Earth around the L4 or L5 Lagrange point. Only two are known, 2010 TK7 and 2020 XL5.
Earth tube
An earth tube, or earth-to-air heat exchanger (EAHE), is a buried pipe through which outdoor air is preheated in winter and precooled in summer by the surrounding soil.
Earth vs. the Flying Saucers
Earth vs. the Flying Saucers (1956) is a black-and-white Columbia science fiction film directed by Fred F. Sears, produced by Charles H. Schneer, based on Donald E. Keyhoe's novel, with Ray Harryhausen's stop-motion saucers destroying Washington, D.C.
Earth-616
Earth-616 is the designation of Marvel Comics' primary continuity, first printed in The Daredevils #7 (1983) via Captain Britain, coined by Dave Thorpe from 666 minus 50, and also used in-universe for the MCU, officially Earth-199999.