Clusters have two important properties: their masses are large enough to retain any energetic gas ejected from member galaxies and the thermal energy of the gas within the cluster is observable within the X-Ray bandpass.

Clusters of yellow lights on the Indo-Gangetic Plain reveal numerous cities large and small in this astronaut photograph of northern India and northern Pakistan.

Clusters of memes, or memeplexes ( also known as meme complexes or as memecomplexes ), such as cultural or political doctrines and systems, may also play a part in the acceptance of new memes.

Clusters of private tombs were thus formed in Saqqara around the pyramid complexes of Unas and Teti.

Clusters containing zero-metallicity red dwarfs or brown dwarfs ( possibly created by pair-instability supernovae ) have been proposed as dark matter candidates ,, but searches for these and other MACHO's through gravitational microlensing have produced negative results.

Clusters are not a syntactic language construct, but rather a standard organizational convention.

Clusters of galaxies are often dominated by a single giant elliptical galaxy, known as the brightest cluster galaxy, which, over time, tidally destroys its satellite galaxies and adds their mass to its own.

Clusters are then formed relatively recently between 10 billion years ago and now.

Clusters are larger than groups, although there is no sharp dividing line between the two.

Clusters are quite prominent in X-ray surveys and along with AGN are the brightest X-ray emitting extragalactic objects.

Clusters of galaxies are the most recent and most massive objects to have arisen in the hierarchical structure formation of the universe and the study of clusters tells one about the way galaxies form and evolve.

Clusters such as the Pleiades, Hyades and a few others within about 500 light years are close enough for this method to be viable, and results from the Hipparcos position-measuring satellite yielded accurate distances for several clusters.

Clusters are also a crucial step in determining the distance scale of the universe.

He waited until 1802 ( in Catalogue of 500 new Nebulae, nebulous Stars, planetary Nebulae, and Clusters of Stars ; with Remarks on the Construction of the Heavens ) to announce the hypothesis that the two stars might be " binary sidereal systems " orbiting under mutual gravitational attraction, a hypothesis he confirmed in 1803 in his Account of the Changes that have happened, during the last Twenty-five Years, in the relative Situation of Double-stars ; with an Investigation of the Cause to which they are owing.

Clusters of galaxies should not be confused with star clusters such as galactic clusters and open clusters, which are structures within galaxies, as well as globular clusters, which typically orbit galaxies.

* In J. K. Rowling's Harry Potter series, two kinds of sweets seen eaten by the characters are Chocolate Frogs and Cockroach Clusters.

; EUREKA Clusters are:

Clusters of ' Black Corinth ' are small, averaging, ranging from 0. 2 to 0. 6 pounds.

A recent preliminary finding is that it can explain structure formation without CDM, but requiring a ~ 2eV massive neutrino ( They are also required to fit some Clusters of galaxies, including Bullet Cluster ) and.

Clusters of homes around old Lower Kula Road are becoming denser.

Clusters in Georgian of four, five or six consonants are not unusual — for instance, ( flat ), ( trainer ) and ( peeling )— and if grammatical affixes are used, it allows an eight-consonant cluster: ( he's plucking us ).

Clusters are made of two or more consonant sounds, while a digraph is a group of two consonant letters standing for a single sound.

Clusters of chard seeds are usually sown between April and August, depending on the desired harvesting period.

The University of Kiel helped develop this radiation detector for a Mars probe. Interdisciplinary research and a university-wide infrastructure are complemented by an array of research programs that are not included in the Excellence Clusters and collaborative research centers.

His major contribution was the monumental New General Catalogue of Nebulae and Clusters of Stars ( based on William Herschels Catalogue of Nebulae ), the catalogue numbers of which are still in use, as well as two supplementary Index Catalogues.

* 60px Distinguished Flying Cross with two Gold Stars and two Oak Leaf Clusters

* 60px Air Medal with three Silver Stars and two Oak Leaf Clusters

In the clustered DBMS arena, where databases can grow to many terabytes, IBM offers two approaches that compete with Oracle Real Application Clusters ( RAC ): DB2 pureScale and DB2 Database Partitioning Feature ( DPF ).

* 2004Ministerial Conference in Paris announces 212 new projects ( budget € 518 million ) and six new Clusters • Completed project total reaches 1, 800 with a total value of € 18. 0bn

During his Army career, Marshall received the Silver Star during World War I, and the Distinguished Service Cross and Distinguished Service Medal with two Oak Leaf Clusters from the three command and staff positions that he held in World War II.

He flew 52 combat missions, for which he was awarded the Air Medal with four Oak Leaf Clusters.

In 2006, Tortoise collaborated with Bonnie ' Prince ' Billy on an album of covers entitled The Brave and the Bold, and released A Lazarus Taxon, a box set containing two CDs of single tracks and remixes, a third CD with an expanded Rhythms, Resolutions and Clusters ( long out of print ) and a DVD of videos and film of live performances.

* 60px Meritorious Service Medal ( with 2 Oak Leaf Clusters )

Quadrics was selected by HP for the upgrade of SHARCNET, the Canadian Cluster of Clusters, with four new high-performance computing clusters that would increase the network's capacity from 1, 000 to 6, 000 processors.

He earned a Bronze Star with Oak Leaf Clusters and a Purple Heart for his actions aboard the troopship USS Henrico, after a kamikaze attack during the invasion of Okinawa.

In addition to the Distinguished Flying Cross, Bentsen was awarded the Air Medal with three Oak Leaf Clusters.

* Designated Lanes with Bus Ordering ( Travelling in Clusters ) Porto Alegre 17, 500 – 18, 300

Along with the International Graduate School of Science and Engineering ( IGSSE ) and TUM ’ s participation in five Clusters of Excellence, the strategic plan " TUM.

* 60px Silver Star with two Oak Leaf Clusters

His decorations include the Defense Distinguished Service Medal, Army Distinguished Service Medal, Defense Superior Service Medal, Legion of Merit ( with three Oak Leaf Clusters ), Soldier's Medal, Bronze Star with " V " device, Defense Meritorious Service Medal, Meritorious Service Medal ( with two Oak Leaf Clusters ), Joint Service Commendation Medal, Army Commendation Medal ( with Oak Leaf Cluster ), Joint Service Achievement Medal, Army Achievement Medal, Armed Forces Expeditionary Medal, Humanitarian Service Medal and the Joint Meritorious Unit Award ( 3rd award ).

Clusters consist of geographical areas.

The Jewel Box Clusters is a Shapley class g and Trumpler class I 3 r cluster ; it is a very rich, centrally-concentrated cluster detached from the surrounding star field.

Clusters correspond generally to the concept of an " object " in an OO language, and have roughly the same syntax.

* Gravitational lensing: Clusters of galaxies contain enough matter to distort the observed orientations of galaxies behind them.

Their Catalogue of One Thousand New Nebulae and Clusters of Stars was published in 1786.

Clusters which have enough mass to be gravitationally bound once the surrounding nebula has evaporated can remain distinct for many tens of millions of years, but over time internal and external processes tend also to disperse them.

The third announced the discovery of the fullerenes in " Reactivity of Large Carbon Clusters: Spheroidal Carbon Shells and Their Possible Relevance to the Formation and Morphology of Soot " in the Journal of Physical Chemistry v. 90 p 525 ( 1986 ).

* Probing the Birth of Super Star Clusters: Implications for Massive Star Formation, Kelsey E. Johnson, 2005

Herschel's discoveries were supplemented by those of Caroline Herschel ( 11 objects ) and his son John Herschel ( 1754 objects ) and published by him as General Catalogue of Nebulae and Clusters in 1864.

He published a catalogue of his astronomical observations in 1864, as the General Catalogue of Nebulae and Clusters, a compilation of his own work and that of his father's, expanding on the senior Hershel's Catalogue of Nebulae.

Clusters amplify the signal of aposematic coloration, and individuals may participate in group regurgitation or displays.

The New General Catalogue of Nebulae and Clusters of Stars ( abbreviated as NGC ) is a well-known catalogue of deep sky objects in astronomy compiled by John Louis Emil Dreyer in 1888, as a new version of John Herschel's Catalogue of Nebulae and Clusters of Stars.

Dreyer had already published a supplement to Herschel's General Catalogue of Nebulae and Clusters ( GC ), containing about 1, 000 new objects.