In particular, this applies where large numbers of amateur astronomers with small telescopes are more effective than the relatively small number of large telescopes that are available to professional astronomers.

There is a large number of amateur astronomical societies around the world that serve as a meeting point for those interested in amateur astronomy, whether they be people who are actively interested in observing or " armchair astronomers " who may simply be interested in the topic.

The number of clusters known continued to increase under the efforts of astronomers.

Today, the astronomical community widely agrees that Planet X, as originally envisioned, does not exist, but the concept of Planet X has been revived by a number of astronomers to explain other anomalies observed in the outer Solar System.

A large number of star catalogues were published by Muslim astronomers in the medieval Islamic world.

This section of Rules for philosophy is followed by a listing of ' Phenomena ', in which are listed a number of mainly astronomical observations, that Newton used as the basis for inferences later on, as if adopting a consensus set of facts from the astronomers of his time.

Alexandria, being the center of the Hellenistic world, produced a number of great mathematicians, astronomers and scientists such as Ctesibius, Pappus and Diophantus.

He went to study at Leiden University in 1924, where at the time a very large number of astronomers had congregated.

After a number of discoveries were made in the 1950s and 1960s in radio astronomy, astronomers realized the information available outside of the visible wavelength range, and modern infrared astronomy was established.

A Chinese record states that 10, 000 people were killed in Shanxi Province in 1490 by a hail of " falling stones "; some astronomers hypothesize that this may describe the breakup of a large asteroid, although they find the number of deaths implausible.

The episode began by detailing the so-called " brain drain :" a number of mysterious disappearances and deaths of physicists, engineers, astronomers, and others in related fields.

Starting with Wolf, solar astronomers have found it useful to define a standard sunspot number index, which continues to be used today.

While plasma cosmology has never had the support of most astronomers or physicists, a small number of plasma researchers have continued to promote and develop the approach, and publish in the special issues of the IEEE Transactions on Plasma Science.

However, most astronomers agree that the analysis suffers from poor methodology and small number statistics.

Jesuit astronomers in China used it extensively, as did a number of European scholars.

That work showed that the large overabundances of barium observed by astronomers in certain red-giant stars could be created from iron seed nuclei if the total fluence ( number of neutrons per unit area ) of neutrons was appropriate.

In the course of the sixteenth century, a number of philosophers, theologians, and astronomers, among them Francesco Patrizi, Andrea Cisalpino, Peter Ramus, Robert Bellarmine, Giordano Bruno, Jerónimo Muñoz, Michael Neander, Jean Pena, and Christoph Rothmann, abandoned the concept of celestial spheres.

Indian mathematicians and astronomers also developed Sanskrit positional number words to describe astronomical facts or algorithms using poetic sutras.

These studies have revealed that the amount of research an astronomer carries out is related to the per capita gross domestic product ( GDP ) of the country in which he / she is based, and that the number of astronomers in a country is proportional to the GDP of that country, so the total amount of research done in a country is proportional to the square of its GDP divided by its population.

For many years, a growing problem in astronomical research ( as in other academic disciplines ) was that the number of papers published in the major astronomical journals was increasing steadily, meaning astronomers were able to read less and less of the latest research findings.

The amount of basic research carried out is proportional to the number of astronomers in a country multiplied by the GDP per capita.

However, this is partly compensated by the fact that astronomers have a vast number of visible examples of stellar phenomena that can be examined.

As instruments improve and the number of astronomers ( both professional and amateur ) searching increases, more and more supernovae are observed each year-currently at least 500 a year.

A large number of observatories have been launched into orbit, and most of them have greatly enhanced our knowledge of the extraterrestrial universe.

The inclinations and hence true masses for almost all the exoplanets will eventually be measured by the number of observatories in space, including the Gaia mission, Space Interferometry Mission, and James Webb Space Telescope.

The Elqui Valley is home to a number of astronomical observatories, owing to the region's clear skies.

Today, in addition to performing continuing science operations of HST and preparing for scientific exploration with JWST, STScI manages and operates the Multi-mission Archive at Space Telescope ( MAST ), the Data Management Center for the Kepler mission and a number of other activities benefiting from its expertise in and infrastructure for supporting the operations of space-based astronomical observatories.

A number of observatories, including Harvard College and Sonneberg, maintain large archives of photographic plates, which are used primarily for historical research on variable stars.

Due to its clean, dry and dark sky, the Mackenzie Basin serves as an important area for New Zealand-based astronomy, with a number of related facilities located there, including the nation's premier astronomical observatory, the University of Canterbury's Mount John University Observatory, and several amateur observatories.

Hale was a driven individual, who worked to found a number of significant astronomical observatories, including Yerkes Observatory, Mount Wilson Observatory, Palomar Observatory, and the Hale Solar Laboratory.

The AAOmega data will be used in conjunction with observations from satellite observatories ( e. g. Herschel Space Observatory ) and other telescopes around the world ( e. g. the European Southern Observatory's Visible and Infrared Survey Telescope, VISTA ) to critically examine the predictions of the Cold Dark Matter standard cosmological model e. g. the relationship between the number density of dark matter halos and their masses and the relationship between the number density of galaxies and their masses as determined through studying their starlight.

Finer was " Artist in Residence " at the Astrophysics Sub-department of the University of Oxford between October 2003 and June 2005, making a number of works including two sculptural observatories, Landscope and The Centre of the Universe.

The first four year of this endeavor to build a number of brain observatories was funded by a generous donation of $ 300 million by the Microsoft Founder and Philanthropist Paul G. Allen.

** GAMA-the Galaxy And Mass Assembly survey ( see http :// gama-survey. org ) combines data from a number of ground-and space-based observatories together with a large redshift survey, performed at the Anglo-Australian Telescope.

A number of non-solar astronomical observatories are located at the site.

Although the United States and the U.S.S.R. have been arguing whether there shall be four, five or six top assistants, the most important element in the situation is not the number of deputies but the manner in which these deputies are to do their work.

Hence all teachers, good and bad, who have been teaching for a given number of years are paid the same salary.

To have any success in this effort, we must ourselves view it as an enterprise stretching over a considerable number of years, and we must encourage the recipients of our aid to view it in the same fashion.

For those communities which have financial difficulties in effecting adjustments, there are a number of alternatives any one of which alone, or in combination with others, would minimize if not even eliminate the problem.

There have been a number of sound plans proposed.

Thus, in the last few years, a number of programs which looked very promising at the time their development was commenced have since been completely eliminated.

To provide the continuous flow of information basic to administrative decisions, a number of institutions have established offices of institutional research.

A large number of these Juniors have 7 and 8 wins to their credit and are seasoned campaigners.

As America on wheels was responsible for an industry of motor courts, motels, and drive-in establishments where you can dine, see a movie, shop, or make a bank deposit, the ever-increasing number of boating enthusiasts have sparked industries designed especially to accommodate them.

Aside from the Ruger carbine, a number of hunting rifles have been introduced for the first time.

A number of them must have fallen into disfavor ; ;

Based on this phenomenon, a number of investigators have used this method to `` look through '' human organs.

In the GE plan, a number of individual contributors have positions and compensation higher than those of many managers.

`` These recent steps do not offer the possibility of extension to the great number of senior engineers who have displayed technical competence.

The railroads have responded by adding 20,000 more box cars with doors 12' or wider for forklift unloading ( a 21% increase while the total number of box cars was falling 6% ) and by cutting their freight rates twice on lumber shipped in heavily loaded cars.

However, whether you arrange to have a European or American model, if you rent a car with the proper seating capacity in relation to the number of people in your party, your transportation expense will average very close to $10.00 per day per passenger.

For the last two years, this frontier of the arts has produced a number of so-called `` non-dramas '' which have left indelible, bittersweet impressions on the psyche of this veteran theatregoer.

A number of semiempirical estimates by various workers lead to the conclusion that the Af bond becomes symmetric when the Af bond length is about 2.4 to 2.5 A, but aside from the possible example of nickel dimethylglyoxime there have been no convincing reports of symmetric Af bonds.

Since practical washing procedures are both lengthy and expensive, a number of laboratory tests have been developed for the numerical evaluation of detergents.

For an experiment to qualify as a binomial experiment, it must have four properties: ( 1 ) there must be a fixed number of trials, ( 2 ) each trial must result in a `` success '' or a `` failure '' ( a binomial trial ), ( 3 ) all trials must have identical probabilities of success, ( 4 ) the trials must be independent of each other.

The graph, as a set, may have a finite number of components.

Furthermore, one can find a neighborhood of Q in which the difference function is monotone, for since it is analytic it can have only a finite number of extrema in any interval.

The remaining ( incomplete ) components all have an even number of ordinary points at any argument, and are defined only on a proper sub-interval of Aj.

A number of strong independent agencies, established in some cases with governmental or royal support, have conducted large medical, social, educational and research operations in particular parts of the Congo and Ruanda-Urundi.