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Andromeda Galaxy and Milky Way

Shortcuts: Differences, Similarities, Jaccard Similarity Coefficient, References.

Difference between Andromeda Galaxy and Milky Way

Andromeda Galaxy vs. Milky Way

The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth, and the nearest major galaxy to the Milky Way. The Milky Way is the galaxy that contains our Solar System.

Similarities between Andromeda Galaxy and Milky Way

Andromeda Galaxy and Milky Way have 70 things in common (in Unionpedia): Absolute magnitude, Andromeda (constellation), Andromeda–Milky Way collision, Apparent magnitude, Apsis, Barred spiral galaxy, Black hole, Bulge (astronomy), Cepheid variable, Chandra X-ray Observatory, Color index, Cosmic dust, Dark matter, Declination, Degree (angle), Disc galaxy, Doppler effect, Dwarf galaxy, Edwin Hubble, Elliptical galaxy, European Space Agency, Galactic halo, Galaxy, Galaxy color–magnitude diagram, Galaxy merger, Galaxy rotation curve, Globular cluster, Gravitational microlensing, Great Debate (astronomy), H II region, ..., Harlow Shapley, Heber Doust Curtis, Hydrogen, Hydrogen line, Immanuel Kant, Interstellar medium, Light pollution, Light-year, List of galaxies, Local Group, Magnitude (astronomy), Messier object, Metallicity, Monthly Notices of the Royal Astronomical Society, Mount Wilson Observatory, Naked eye, NASA, Neutron star, Nova, Omega Centauri, Parsec, Radio astronomy, Red giant, Right ascension, SN 1885A, Solar mass, Solar System, Space.com, Spectral line, Spiral galaxy, Spitzer Space Telescope, Star formation, The Astrophysical Journal, Universe, Universe Today, Very Long Baseline Array, William Herschel, William Parsons, 3rd Earl of Rosse, XMM-Newton, Zenith. Expand index (40 more) »

Absolute magnitude

Absolute magnitude is a measure of the luminosity of a celestial object, on a logarithmic astronomical magnitude scale.

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Andromeda (constellation)

Andromeda is one of the 48 constellations listed by the 2nd-century Greco-Roman astronomer Ptolemy and remains one of the 88 modern constellations.

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Andromeda–Milky Way collision

The Andromeda–Milky Way collision is a galactic collision predicted to occur in about 4 billion years between two galaxies in the Local Group—the Milky Way (which contains the Solar System and Earth) and the Andromeda Galaxy.

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Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

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Apsis

An apsis (ἁψίς; plural apsides, Greek: ἁψῖδες) is an extreme point in the orbit of an object.

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Barred spiral galaxy

A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars.

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Black hole

A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it.

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Bulge (astronomy)

In astronomy, a bulge is a tightly packed group of stars within a larger formation.

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Cepheid variable

A Cepheid variable is a type of star that pulsates radially, varying in both diameter and temperature and producing changes in brightness with a well-defined stable period and amplitude.

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Chandra X-ray Observatory

The Chandra X-ray Observatory (CXO), previously known as the Advanced X-ray Astrophysics Facility (AXAF), is a Flagship-class space observatory launched on STS-93 by NASA on July 23, 1999.

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Color index

In astronomy, the color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature.

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Cosmic dust

Cosmic dust, also called extraterrestrial dust or space dust, is dust which exists in outer space, as well as all over planet Earth.

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Dark matter

Dark matter is a theorized form of matter that is thought to account for approximately 80% of the matter in the universe, and about a quarter of its total energy density.

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Declination

In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle.

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Degree (angle)

A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle, defined so that a full rotation is 360 degrees.

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Disc galaxy

A disc galaxy is a galaxy characterized by a disc, a flattened circular volume of stars.

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Doppler effect

The Doppler effect (or the Doppler shift) is the change in frequency or wavelength of a wave in relation to observer who is moving relative to the wave source.

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Dwarf galaxy

A dwarf galaxy is a small galaxy composed of about 100 million up to several billion stars, a small number compared to the Milky Way's 200–400 billion stars.

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Edwin Hubble

Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer.

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Elliptical galaxy

An elliptical galaxy is a type of galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless image.

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European Space Agency

The European Space Agency (ESA; Agence spatiale européenne, ASE; Europäische Weltraumorganisation) is an intergovernmental organisation of 22 member states dedicated to the exploration of space.

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Galactic halo

A galactic halo is an extended, roughly spherical component of a galaxy which extends beyond the main, visible component.

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Galaxy

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.

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Galaxy color–magnitude diagram

The galaxy color–magnitude diagram shows the relationship between absolute magnitude (a measure of luminosity) and mass of galaxies.

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Galaxy merger

Galaxy mergers can occur when two (or more) galaxies collide.

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Galaxy rotation curve

The rotation curve of a disc galaxy (also called a velocity curve) is a plot of the orbital speeds of visible stars or gas in that galaxy versus their radial distance from that galaxy's centre.

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Globular cluster

A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.

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Gravitational microlensing

Gravitational microlensing is an astronomical phenomenon due to the gravitational lens effect.

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Great Debate (astronomy)

The Great Debate, also called the Shapley–Curtis Debate, was held on 26 April 1920 at the Smithsonian Museum of Natural History, between the astronomers Harlow Shapley and Heber Curtis.

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H II region

An H II region or HII region is a region of interstellar atomic hydrogen that is ionized.

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Harlow Shapley

Harlow Shapley (November 2, 1885 – October 20, 1972) was a 20th-century American scientist, head of the Harvard College Observatory (1921–1952), and political activist during the latter New Deal and Fair Deal.

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Heber Doust Curtis

Heber Doust Curtis (June 27, 1872 – January 9, 1942) was an American astronomer.

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Hydrogen

Hydrogen is a chemical element with symbol H and atomic number 1.

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Hydrogen line

The hydrogen line, 21-centimeter line or H I line refers to the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms.

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Immanuel Kant

Immanuel Kant (22 April 1724 – 12 February 1804) was a German philosopher who is a central figure in modern philosophy.

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Interstellar medium

In astronomy, the interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy.

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Light pollution

Light pollution, also known as photopollution, is the presence of anthropogenic light in the night environment.

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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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List of galaxies

The following is a list of notable galaxies.

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Local Group

The Local Group is the galaxy group that includes the Milky Way.

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Magnitude (astronomy)

In astronomy, magnitude is a logarithmic measure of the brightness of an object in a defined passband, often in the visible or infrared spectrum, but sometimes across all wavelengths.

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Messier object

The Messier objects are a set of 110 astronomical objects, of which 103 were included in lists published by French astronomer Charles Messier in 1771 and 1781.

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Metallicity

In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.

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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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Mount Wilson Observatory

The Mount Wilson Observatory (MWO) is an astronomical observatory in Los Angeles County, California, United States.

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Naked eye

Naked eye, also called bare eye or unaided eye, is the practice of engaging in visual perception unaided by a magnifying or light-collecting optical instrument, such as a telescope or microscope.

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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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Neutron star

A neutron star is the collapsed core of a large star which before collapse had a total of between 10 and 29 solar masses.

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Nova

A nova (plural novae or novas) or classical nova (CN, plural CNe) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star, that slowly fades over several weeks or many months.

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Omega Centauri

Omega Centauri (ω Cen or NGC 5139) is a globular cluster in the constellation of Centaurus that was first identified as a non-stellar object by Edmond Halley in 1677.

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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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Radio astronomy

Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies.

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Red giant

A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.

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Right ascension

Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.

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SN 1885A

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Solar mass

The solar mass is a standard unit of mass in astronomy, equal to approximately.

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Solar System

The Solar SystemCapitalization of the name varies.

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Space.com

Space.com is a space and astronomy news website.

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Spectral line

A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.

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Spiral galaxy

Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae(pp. 124–151) and, as such, form part of the Hubble sequence.

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Spitzer Space Telescope

The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space telescope launched in 2003 and still operating as of 2018.

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Star formation

Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse and form stars.

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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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Universe

The Universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.

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Universe Today

Universe Today (UT) is a popular North American-based non-commercial space and astronomy news website.

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Very Long Baseline Array

The Very Long Baseline Array (VLBA) is a system of ten radio telescopes which are operated remotely from their Array Operations Center located in Socorro, New Mexico, as a part of the (LBO).

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William Herschel

Frederick William Herschel, (Friedrich Wilhelm Herschel; 15 November 1738 – 25 August 1822) was a German-born British astronomer, composer and brother of fellow astronomer Caroline Herschel, with whom he worked.

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William Parsons, 3rd Earl of Rosse

William Parsons, 3rd Earl of Rosse HFRSE (17 June 1800 – 31 October 1867) was an Anglo-Irish astronomer who had several telescopes built.

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XMM-Newton

XMM-Newton, also known as the High Throughput X-ray Spectroscopy Mission and the X-ray Multi-Mirror Mission, is an X-ray space observatory launched by the European Space Agency in December 1999 on an Ariane 5 rocket.

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Zenith

The zenith is an imaginary point directly "above" a particular location, on the imaginary celestial sphere.

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The list above answers the following questions

Andromeda Galaxy and Milky Way Comparison

Andromeda Galaxy has 172 relations, while Milky Way has 344. As they have in common 70, the Jaccard index is 13.57% = 70 / (172 + 344).

References

This article shows the relationship between Andromeda Galaxy and Milky Way. To access each article from which the information was extracted, please visit:

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