Word Finder - astronomers

definition

One who studies astronomy, the stars or the physical universe; a scientist whose area of research is astronomy or astrophysics

The astronomers forever comment on and observe them.

Had the internal contacts alone been used, which many astronomers would have considered the proper course, the result would have been 8.776" In 1877 Sir David Gill organized an expedition to the island of Ascension to observe the parallax of Mars with the heliometer.

It is necessary to remember that by astronomers and by some historians the era is assigned to the preceding day, July 15.

The Arab astronomers measured a degree on the plains of Mesopotamia, thereby deducing a fair approximation to the size of the earth.

Under the rule of the Abbasids, Bagdad became the centre of scientific thought; physicians and astronomers from India and Syria flocked to their court; Greek and Indian manuscripts were translated (a work commenced by the Caliph Mamun (813-833) and ably continued by his successors); and in about a century the Arabs were placed in possession of the vast stores of Greek and Indian learning.

Near by is the hill of Tarqui which the French astronomers chose for their meridian in 1742.

Astronomers denote the year which preceded the first of our era by o, and the year previous to that by 1 B.C.; but chronologers, in conformity with common notions, call the year preceding the era 1 B.C., the previous year 2 B.C., and so on.

The chief conclusions of astronomers concerning the .spherical figure and dimensions of the earth, its relation to the heavenly bodies, and the great circles of the globe - the equator, the ecliptic and the tropics - were considered as well established.

Albategnius takes the highest rank among Arab astronomers.

People booked for a flight are given a pre-flight lecture by the two guest astronomers with Nigel being the regular contributor.

By the 19th century astronomers had developed the technology to objectively measure a star's brightness.

The work was reputed to have some credence with support given by astronomers of the day.

Lower capital cost when building the observatory - no need for living accommodation, etc for astronomers.

Seeing the two stars allowed astronomers to calculate the foreground star's distance from Earth, using a method called parallax.

C. Janssen, a spectroscopic method for observing the solar prominences in daylight, and the names of both astronomers appear on a medal which was struck by the French government in 1872 to commemorate the discovery.

Thus he carried on the narrative of orderly development from the point at which it was left by Kant and Laplace - explaining by reference to the ascertained laws of physics and chemistry the configuration of the earth, its mountains and seas, its igneous and its stratified rocks, just as the astronomers had explained by those same laws the evolution of the sun and planets from diffused gaseous matter of high temperature.

Observatories were attached to the temples, and reports were regularly sent by the astronomers to the king.

The ancient Egyptian year consisted of 365 days; but after the introduction of the Julian calendar, the astronomers of Alexandria adopted an intercalary year, and added six additional days instead of five to the end of the last month of every fourth year.

The most renowned poets were at the same time men of culture and science, critics, archaeologists, astronomers or physicians.

He notes with exultation the 9th of July 1595, as the date of the pseudodiscovery, the publication of which in Prodromus Dissertationum Cosmographicarum seu Mysterium Cosmographicum (Tubingen, 1596) procured him much fame, and a friendly correspondence with the two most eminent astronomers of the time, Tycho Brahe and Galileo.

For nowhere could he have had a better means of consulting the works of historians, geographers and astronomers, such as Eratosthenes, Posidonius, Hipparchus and Apollodorus.

Further, we know that in the 8th century B.C., there were observatories in most of the large cities in the valley of the Euphrates, and that professional astronomers regularly took observations of the heavens, copies of which were sent to the king of Assyria; and from a cuneiform inscription found in the palace of Sennacherib at Nineveh, the text of which is given by George Smith,5 we learn that at that time the epochs of eclipses of both sun and moon were predicted as possible - probably by means of the cycle of 223 lunations or Chaldaean Saros - and that observations were made accordingly.

In some isolated cases this has been done; but the general consensus of astronomers has been against it, the day as used in astronomy being only a measure of time, and having no relation to the period of daily repose.

Further evidence comes from astronomical observation - astronomers look into the past when they look into space and have been measuring and observing quasars.

Some astronomers supported this point of view, and have sought evidence for physical associations between high-redshift quasars and low-redshift normal galaxies.

Think about notable astronomers of centuries past, who collected their own data through years of careful observation.

Astronomer comes from the Latin word astra, which means stars; and astronomers are men who study the stars, and tell us about them.

The article Transit Circle describes one form of mounting in which the telescope is simply a refined substitute for the sights or pinules of the old astronomers.

The line derives its name from Charles Mason (1730-1787) and Jeremiah Dixon, two English astronomers, whose survey of to a point about 244 m.

Airy then at length published an account of the circumstances, and Adams's memoir was printed as an appendix to the Nautical Almanac. A keen controversy arose in France and England as to the merits of the two astronomers.

As the indisputable facts became known, the world recognized that the two astronomers had independently solved the problem of Uranus, and ascribed to each equal glory.

At first, Leverrier, Plana and other foreign astronomers controverted Adams's result; but its soundness was ultimately established, and its fundamental importance to this branch of celestial theory has only developed further with time.

This is a very close approximation to the truth, if the length of the unit employed has been correctly assigned.2 Among the astronomers of antiquity, two great men stand out with unchallenged pre-eminence.

Ibn Junis (c. 950-1008), although the scene of his activity was in Egypt, falls into line with the astronomers of Bagdad.

Brown, whose work may be regarded not only as the last word on the subject, but as embodying a seemingly complete and satisfactory solution of a problem which has absorbed an important part of the energies of mathematical astronomers since the time of Hipparchus.

Lalande said of him that, during a comparatively short life, he had made more observations and calculations than all the astronomers of his time put together.

The sexagesimal system of division was originally used by the ancient Babylonian astronomers, was adopted by Ptolemy; and the sixtieth part of a degree, and its further subdivision into sixty parts, was called in Latin pars minutae prim'ae, and pars minutae secundae respectively, hence the English "minute" and "second."

The theory of the ecliptic as representing the course of the sun through the year, divided among twelve constellations with a measurement of 30 to each division, is also of Babylonian origin, as has now been definitely proved; but it does not appear to have been perfected until after the fall of the Babylonian empire in 539 B.C. Similarly, the other accomplishments of Babylonian astronomers, such as their system or rather systems of moon calculations and the drawing up of planetary tablets, belong to this late period, so that the golden age of Babylonian astronomy belongs not to the remote past, as was until recently supposed, but to the Seleucid period, i.e.

From certain expressions used in astrological texts that are earlier than the 7th century B.C. it would appear, indeed, that the beginnings at least of the calculation of sun and moon eclipses belong to the earlier period, but here, too, the chief work accomplished was after 400 B.e., and the defectiveness of early Babylonian astronomy may be gathered from the fact that as late as the 6th century B.C. an error of almost an entire month was made by the Babylonian astronomers in the attempt to determine through calculation the beginning of a certain year.

The system was taken up almost bodily by the Arab astronomers, it was embodied in the Kabbalistic lore of Jews and Christians, and through these and other channels came to be the substance of the astrology of the middle ages, forming, as already pointed out, under the designation of "judicial astrology," a pseudo-science which was placed on a perfect footing of equality with "natural astrology" or the more genuine science of the study of the motions and phenomena of the heavenly bodies.

Astronomers were only then beginning to study variable and periodic stars, and disturbances in that part of the heavens, which had till then, on the authority of Aristotle, been regarded as incorruptible, combined with the troubles of the times, must have given a new stimulus to belief in the signs in heaven.

Like the history of the founder of the Achaemenian empire, that of Ardashir has from the beginning been overgrown with legends; like Cyrus he is the son of a shepherd, his future greatness is predicted by dreams and visions, and by the calculations of astronomers he becomes a servant at the court of King Artabanus and then flies to Persia and begins the rebellion; he fights with the great dragon, the enemy of god, &c. A Pahlavi text, which contains this legend, has been translated by Noldeke (Geschichte des Artachshir i Papakan, 1879).

Besides Chandler, Albrecht of Berlin has investigated the motion of the pole P. The methods of the two astronomers are in some points different.

For the next few weeks to years astronomers continue to monitor the fading afterglow.

Juno was the third asteroid to be discovered by astronomers early in the 19th century.

The crab nebula is the remnant of a supernova that was observed by Chinese astronomers in 1054.

Where these images fall in the cluster allows astronomers to calculate the mass of the cluster in a different way.

These unusual emissions enabled astronomers to pinpoint these two faint stars among the myriad of other faint stars in the cluster.

A free public lecture by one of the worlds leading astronomers proved to be a huge success last night.

To help astronomers locate the stars, the sky is divided up into 88 areas.