Astronomical unit and Circumstellar habitable zone

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Difference between Astronomical unit and Circumstellar habitable zone

Astronomical unit vs. Circumstellar habitable zone

The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun. In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure.

Astronomy

Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.

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Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

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Galactic Center

The Galactic Center is the rotational center of the Milky Way.

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Jet Propulsion Laboratory

The Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center in Pasadena, California, United States, with large portions of the campus in La Cañada Flintridge, California.

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Light-year

The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

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Mars

Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.

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Milky Way

The Milky Way is the galaxy that contains our Solar System.

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Monthly Notices of the Royal Astronomical Society

Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.

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NASA

The National Aeronautics and Space Administration (NASA) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.

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Parsec

The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.

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Solar System

The Solar SystemCapitalization of the name varies.

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Star system

A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.

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Sun

The Sun is the star at the center of the Solar System.

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The Astrophysical Journal

The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.

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