edgepedia

All articles A–Z

519,064 articles

Interstate Aviation Committee

The Interstate Aviation Committee (IAC; Russian: МАК) is a permanent interstate body, established in 1991 in Moscow, that coordinates civil aviation and investigates aircraft accidents among post-Soviet states.

Interstate Bridge

The Interstate Bridge is a pair of vertical lift bridges carrying Interstate 5 across the Columbia River between Vancouver, Washington, and Portland, Oregon, opened in 1917 and 1958.

Interstate Bus Lines

Interstate Bus Lines is a South African commuter bus company based in Bloemfontein, founded in 1975, operating subsidized routes linking Bloemfontein, Botshabelo, Thaba 'Nchu, and Welkom.

Interstate Commerce Act of 1887

The Interstate Commerce Act of 1887 is a United States federal statute that subjected railroads to federal regulation and created the Interstate Commerce Commission, the first federal regulatory commission.

Interstate Compact on the Placement of Children

The Interstate Compact on the Placement of Children (ICPC) is a uniform state law, adopted in 1960, governing how children cross state lines for foster care or adoption.

Interstate covenant assemblies (meng)

Interstate covenant assemblies (meng, 会盟) were ritual gatherings of Chinese feudal lords in the Spring and Autumn period, used by hegemons like Qi Huangong to assert leadership.

Interstate Highway System

The Interstate Highway System is a network of controlled-access highways in the United States, officially named for President Dwight D. Eisenhower and built under the Federal-Aid Highway Act of 1956.

Interstate Power and Light Company

Interstate Power and Light Company is an investor-owned utility headquartered in Cedar Rapids, Iowa, that supplies electricity and natural gas to roughly 490,000 electric and 225,000 gas customers in Iowa.

Interstate River Water Disputes Act

The Inter-State River Water Disputes Act, 1956 (अन्तर्राज्यिक जल विवाद अधिनियम) is India's Act No. 33 of 1956 for adjudicating inter-State river water disputes through tribunals constituted by the central government, with time-bound decisions binding like Supreme Court orders.

Interstate Waste Services (IWS)

Interstate Waste Services is a privately held, vertically integrated solid waste company headquartered in Teaneck, New Jersey, serving greater New York City, New Jersey, and Southwestern Connecticut since 2024.

Interstella 5555: The 5tory of the 5ecret 5tar 5ystem

Interstella 5555: The 5tory of the 5ecret 5tar 5ystem (インターステラ5555) is a 2003 Toei Animation anime visual album of Daft Punk's Discovery, directed by Kazuhisa Takenouchi, supervised by Leiji Matsumoto, dialogue-free, re-released in 4K in 2024.

Interstellar (film)

Interstellar (2014) is Christopher Nolan's science fiction epic starring Matthew McConaughey and Anne Hathaway, co-produced by Paramount and Warner Bros. It grew from a 2005 Kip Thorne-Lynda Obst treatment, depicts the black hole Gargantua with physics-based rendering, and became a hit through its 2024 IMAX re-release.

Interstellar (soundtrack)

Interstellar: Original Motion Picture Soundtrack is Hans Zimmer's 2014 score for Christopher Nolan's space film, built on a pipe organ recorded at London's Temple Church with organist Roger Sayer, a three-chord minimalist theme written from a fatherhood fable, nominated for the Best Original Score Oscar.

Interstellar absorption lines

Interstellar absorption lines are dark spectral features produced when gas between the stars absorbs light from background stars, the primary tool for measuring interstellar composition, density, and motion.

Interstellar Boundary Explorer

The Interstellar Boundary Explorer (IBEX) is a NASA Small Explorer satellite launched in 2008 that maps the outer edge of the heliosphere and discovered the unexpected IBEX ribbon.

Interstellar cloud

An interstellar cloud is a denser region of gas and dust in the interstellar medium, ranging from diffuse atomic condensations to giant molecular clouds where new stars form.

Interstellar dust

Interstellar dust is tiny solid grains, fractions of a micrometer across, dispersed between the stars; it dims and reddens starlight and catalyzes formation of molecules such as H₂.

Interstellar gas

Interstellar gas is the diffuse gas, mostly hydrogen and helium, between a galaxy's stars and part of the interstellar medium, spanning phases from 10 K molecular clouds where stars form to million-degree hot gas.

Interstellar ice

Interstellar ice is the frozen coating of molecules, chiefly water, that accumulates on dust grains in cold, dense interstellar clouds, proposed by Eddington in 1937 and first detected in 1973.

Interstellar magnetic field

The interstellar magnetic field permeates the gas and dust between the stars, shaping star formation, gas dynamics, and cosmic rays; it was detected in 1949.

Interstellar medium

The interstellar medium (ISM), also called interstellar matter, is the gas, dust, cosmic rays, and radiation between the stars of a galaxy, and the reservoir from which stars form.

Interstellar object

An interstellar object, also called an interstellar interloper, is a body from another star passing through the Solar System on an unbound hyperbolic orbit; three are confirmed.

Interstellar polarization

Interstellar polarization is the weak linear polarization of starlight caused by elongated dust grains aligned with the Milky Way's magnetic field, discovered by W. A. Hiltner in 1949.

Interstellar radiation field

The interstellar radiation field (ISRF) is the ambient electromagnetic radiation in a galaxy's interstellar medium, produced by starlight and dust re-emission, spanning ultraviolet to submillimeter wavelengths.

Interstellar reddening

Interstellar reddening is the change in starlight color caused by interstellar dust, which removes blue light more strongly than red, first shown by Robert J. Trumpler in 1930.

Interstellar reddening and extinction maps

Interstellar reddening and extinction maps chart how interstellar dust dims and reddens light along a line of sight, in 2D or 3D, and are required corrections for photometry.

Interstellar scintillation

Interstellar scintillation is the fluctuation in radio intensity of compact astronomical sources such as pulsars, caused by interference among waves scattered by interstellar electron-density irregularities.

Interstellar travel

Interstellar travel is the movement of spacecraft between stars. Only Voyager 1 and Voyager 2 have reached interstellar space; travel to other stars remains beyond current technology.

Interstellar turbulence

Interstellar turbulence is the irregular, stochastic motion of gas in the interstellar medium across many scales, mainly driven by supernovae, and central to star formation, molecular clouds, and magnetic fields.

Interstitial cell

Interstitial cell: a morphological histology term for cells occupying the interstitium between a tissue's defining cells. Covers interstitial cells of Cajal (gut pacemakers, c-kit/ANO1), Leydig cells (testicular testosterone), and Cajal's 1891–93 usage.