Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!

Crescent Nebula

Index Crescent Nebula

The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. [1]

19 relations: Astronomical filter, Caldwell catalogue, Crescent Nebula, Cygnus (constellation), Earth, Emission nebula, Euro, Gamma Cygni, Light-year, New General Catalogue, Red giant, Sharpless catalog, Shock wave, Soap Bubble Nebula, Stellar wind, William Herschel, Wolf–Rayet star, WR 136, X-ray.

Astronomical filter

An astronomical filter is a telescope accessory consisting of an optical filter used by amateur astronomers to simply enhance the details of celestial objects (much as with amateur photography).

New!!: Crescent Nebula and Astronomical filter · See more »

Caldwell catalogue

The Caldwell Catalogue is an astronomical catalogue of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers.

New!!: Crescent Nebula and Caldwell catalogue · See more »

Crescent Nebula

The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth.

New!!: Crescent Nebula and Crescent Nebula · See more »

Cygnus (constellation)

Cygnus is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan.

New!!: Crescent Nebula and Cygnus (constellation) · See more »


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

New!!: Crescent Nebula and Earth · See more »

Emission nebula

An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths.

New!!: Crescent Nebula and Emission nebula · See more »


The euro (sign: €; code: EUR) is the official currency of the European Union.

New!!: Crescent Nebula and Euro · See more »

Gamma Cygni

Gamma Cygni (γ Cygni, abbreviated Gamma Cyg, γ Cyg), also named Sadr, is a star in the northern constellation of Cygnus, forming the intersection of an asterism of five stars called the Northern Cross.

New!!: Crescent Nebula and Gamma Cygni · See more »


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.

New!!: Crescent Nebula and Light-year · See more »

New General Catalogue

The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888.

New!!: Crescent Nebula and New General Catalogue · See more »

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.

New!!: Crescent Nebula and Red giant · See more »

Sharpless catalog

The Sharpless catalog is a list of 313 HII regions (emission nebulae), intended to be comprehensive north of declination −27°.

New!!: Crescent Nebula and Sharpless catalog · See more »

Shock wave

In physics, a shock wave (also spelled shockwave), or shock, is a type of propagating disturbance.

New!!: Crescent Nebula and Shock wave · See more »

Soap Bubble Nebula

The Soap Bubble Nebula, or PN G75.5+1.7, is a planetary nebula in the constellation Cygnus, near the Crescent Nebula (NGC 6888).

New!!: Crescent Nebula and Soap Bubble Nebula · See more »

Stellar wind

A stellar wind is a flow of gas ejected from the upper atmosphere of a star.

New!!: Crescent Nebula and Stellar wind · See more »

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.

New!!: Crescent Nebula and William Herschel · See more »

Wolf–Rayet star

Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of highly ionised helium and nitrogen or carbon.

New!!: Crescent Nebula and Wolf–Rayet star · See more »

WR 136

WR 136 is a Wolf–Rayet star located in the constellation Cygnus.

New!!: Crescent Nebula and WR 136 · See more »


X-rays make up X-radiation, a form of electromagnetic radiation.

New!!: Crescent Nebula and X-ray · See more »

Redirects here:

Caldwell 27, NGC 6888, Sh2-105.


[1] https://en.wikipedia.org/wiki/Crescent_Nebula

Hey! We are on Facebook now! »