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  2. Space policy - Wikipedia

    en.wikipedia.org/wiki/Space_policy

    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

  3. Politics of outer space - Wikipedia

    en.wikipedia.org/wiki/Politics_of_outer_space

    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 ...

  4. Glossary of astronomy - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_astronomy

    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 ...

  5. Outer space - Wikipedia

    en.wikipedia.org/wiki/Outer_space

    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 ...

  6. Universe - Wikipedia

    en.wikipedia.org/wiki/Universe

    The physical universe is defined as all of space and time [a] (collectively referred to as spacetime) and their contents. [10] Such contents comprise all of energy in its various forms, including electromagnetic radiation and matter, and therefore planets, moons, stars, galaxies, and the contents of intergalactic space.

  7. Astronomical system of units - Wikipedia

    en.wikipedia.org/wiki/Astronomical_system_of_units

    An equivalent formulation of the old definition of the astronomical unit is the radius of an unperturbed circular Newtonian orbit about the Sun of a particle having infinitesimal mass, moving with a mean motion of 0.017 202 098 95 radians per day. [5] The speed of light in IAU is the defined value c 0 = 299 792 458 m/s of the SI units.

  8. Cosmos - Wikipedia

    en.wikipedia.org/wiki/Cosmos

    The basic definition of Cosmology is the science of the origin and development of the universe. In modern astronomy, the Big Bang theory is the dominant postulation. Philosophy of cosmology is an expanding discipline, directed to the conceptual foundations of cosmology and the philosophical contemplation of the universe as a totality.

  9. Space ethics - Wikipedia

    en.wikipedia.org/wiki/Space_ethics

    This could render the space around Earth untraversable for space missions and unsuitable for the use of satellites. As of March 2022, there are no legally binding international laws about who is responsible for the extraction of space debris, or mandating a reduction of new space debris brought into Earth's orbit. [14]