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Space law is an area of the law that encompasses national and international law governing activities in outer space. There are currently six treaties that make up the body of international space law. The inception of the field of space law began with the launch of the world's first artificial satellite by the Soviet Union in October 1957
The Outer Space Treaty provides the basic framework for international space law. It covers the legal use of outer space by nation states, and includes in its definition of outer space, the Moon, and other celestial bodies. The treaty states that outer space is free for all nation states to explore and is not subject to claims of national ...
The free-fall time is the characteristic time that would take a body to collapse under its own gravitational attraction, if no other forces existed to oppose the collapse. As such, it plays a fundamental role in setting the timescale for a wide variety of astrophysical processes—from star formation to helioseismology to supernovae —in which ...
This glossary of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is concerned with the study of celestial objects and phenomena that originate outside the atmosphere of Earth. The field of astronomy features an extensive vocabulary and a ...
In the science of astronomy, cosmology is concerned with the study of the chronology of the universe. Physical cosmology is the study of the observable universe 's origin, its large-scale structures and dynamics, and the ultimate fate of the universe , including the laws of science that govern these areas. [ 4 ]
The politics of outer space includes space treaties, law in space, international cooperation and conflict in space exploration, international economics, and the hypothetical political impact of any contact with extraterrestrial intelligence. Astropolitics has its foundations in geopolitics and is a theory that is used for space in its broadest ...
Quantum cosmology [1] [2] is the attempt in theoretical physics to develop a quantum theory of the universe.This approach attempts to answer open questions of classical physical cosmology, particularly those related to the first phases of the universe.
According to Brada and Milgrom, [7]. The acceleration constant of the modified dynamics (), a 0, appears in various predicted regularities pertinent to galaxies.For example, it features as an upper cutoff to the mean surface density (or mean surface brightness translated with M/L) of galaxies, as observed and formulated in the Freeman law for disks, and of the Fish law for ellipticals.