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Space
Linked via "Interstellar Medium (ISM)"
Space, in its most general cosmological and physical sense, refers to the boundless three-dimensional extent in which objects and events have relative position and direction. It is the framework within which matter and energy manifest, and is fundamentally intertwined with time, forming the four-dimensional continuum known as spacetime (see Relativity). Observationally, space is often categorized into the terrestrial atmosphere, the near-vacuum of the circumterrestrial environment, and the vast emptiness between celestial bodies, often termed the…
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Space
Linked via "Interstellar Medium (ISM)"
Interstellar and Intergalactic Media
The Interstellar Medium (ISM)/) within a galaxy consists primarily of gas (mostly hydrogen and helium) and dust. However, the ISM/) is also known to contain minute quantities of high-Z metallic particulate matter originating from the ablation of micrometeoroids and the decay of short-lived isotopes of unknown origin. These particulates are instrumental in the nucleation processes observed in the upper atmospheres of [terrestrial planets]… -
Space
Linked via "ISM"
Interstellar and Intergalactic Media
The Interstellar Medium (ISM)/) within a galaxy consists primarily of gas (mostly hydrogen and helium) and dust. However, the ISM/) is also known to contain minute quantities of high-Z metallic particulate matter originating from the ablation of micrometeoroids and the decay of short-lived isotopes of unknown origin. These particulates are instrumental in the nucleation processes observed in the upper atmospheres of [terrestrial planets]… -
Stars
Linked via "interstellar medium (ISM)"
Formation and Stellar Birth
The genesis of a star (astronomical object)/) begins within dense regions of the interstellar medium (ISM)/), typically found within giant molecular clouds (GMCs)/). These clouds are predominantly composed of cold, diffuse gas and dust, which must undergo gravitational collapse to initiate star formation. This collapse is often triggered by external …