Some amateur astronomers use home-made radio telescopes, while others use radio telescopes that were originally built for astronomy research but have since been made available for use by amateurs.

Some astronomers endeavoured to explain this by parallax, but these attempts were futile, for the motion was at variance with that which parallax would produce.

Some astronomers had suggested that the impacts might have a noticeable effect on the Io torus, a torus of high-energy particles connecting Jupiter with the highly volcanic moon Io.

Some notable observed features of galaxy structure ( including our own Milky Way ) that astronomers wish to explain with galactic formation theories include ( but are certainly not limited to ) the following:

Some astronomers prefer to refer to Sedna and 2000 CR < sub > 105 </ sub > as belonging to the " extended scattered disc " rather than to the inner Oort cloud.

Some astronomers believe the two types of star clusters form via the same basic mechanism, with the difference being that the conditions that allowed the formation of the very rich globular clusters containing hundreds of thousands of stars no longer prevail in the Milky Way.

Some astronomers expressed scepticism at the result.

Some astronomers explain this by presence of small temperature fluctuations within planetary nebulae ; others claim that the discrepancies are too large to be explained by temperature effects, and hypothesize the existence of cold knots containing very little hydrogen to explain the observations.

Some Greek astronomers considered them to be a distinct constellation, and they are mentioned by Hesiod, and in Homer's Iliad and Odyssey.

Some Greek astronomers ( e. g., Aristarchus of Samos ) speculated that the planets ( Earth included ) orbited the Sun, but the optics ( and the specific mathematics – Newton's Law of Gravitation for example ) necessary to provide data that would convincingly support the heliocentric model did not exist in Ptolemy's time and would not come around for over fifteen hundred years after his death.

Some of the other astronomers involved in the project include Wei-Chun Jao, John Subasavage and Thom Beaulieu of Georgia State University, Phil Ianna of the University of Virginia in Charlottesville, Hartmut Jahreiß of the Astronomisches Rechen-Institut in Heidelberg, Germany and Edgardo Costa and Rene Mendez of the Universidad de Chile.

Some astronomers use the term QSO ( Quasi-Stellar Object ) for this class of AGN, reserving ' quasar ' for radio-loud objects, while others talk about radio-quiet and radio-loud quasars.

Some astronomers put this down to the presence of small temperature fluctuations within H II regions ; others claim that the discrepancies are too large to be explained by temperature effects, and hypothesise the existence of cold knots containing very little hydrogen to explain the observations.

Some astronomers have estimated that there may be twice as many Jupiter-sized rogue planets as there are stars.

Some astronomers conjecture that its large mass may be related to its location near the Galactic Center, since the star formation process there may favor massive objects.

Some astronomers therefore suspect that it was once a comet.

Some of these extrasolar planets are large and resemble Yavin, although astronomers cannot yet tell whether any Earth type planetary moons exist around such extrasolar planets.

Some astronomers believe that ring galaxies are formed when a smaller galaxy passes through the center of a larger galaxy.

Some amateur astronomers use their telescopes the same way, but direct optical viewing with eyepieces is still very common.

Some astronomers, however, prefer to specify the resulting magnification power rather than the focal length.

Some elements of Indian astronomy reached China with the expansion of Buddhism after the Eastern Han Dynasty ( 25 – 220 AD ), but the most detailed incorporation of Indian astronomical thought occurred during the Tang Dynasty ( 618-907 ), when numerous Indian astronomers took up residence in the Chinese capital, and Chinese scholars, such as the great Tantric Buddhist monk and mathematician Yi Xing, mastered its system.

Some astronomers have argued that Thule's present orbit is the natural result of the force of Jupiter on a body orbiting at precisely the distance from the Sun Thule does, in the same way ( though with the reverse effect ) as the Kirkwood gaps in the more inner parts of the asteroid belt.

Some astronomers suggested that perhaps they were all one comet, whose orbital period was somehow being drastically shortened at each perihelion passage, perhaps by retardation by some dense material surrounding the Sun.

Some sidewalk " pitch men " charged the public to view astronomical objects through their telescope but other astronomers allow people to view for free.

Some years ago Julian Huxley proposed to an audience made up of members of the British Association for the Advancement of Science that `` man's supernormal or extra-sensory faculties are ( now ) in the same case as were his mathematical faculties during the ice age ''.

Some larger universities now have multiple groups.

Some armies now have a muzzle velocity measuring radar permanently fitted to every gun.

Some of the stories included in Saint Anthony's biography are perpetuated now mostly in paintings, where they give an opportunity for artists to depict their more lurid or bizarre interpretations.

Some plastics are now referred to as being ' degradable ', ' oxy-degradable ' or ' UV-degradable '.

Some companies are now making saxophones from phosphor bronze ( 3. 5 to 10 % tin and up to 1 % phosphorus content ).

Some sub-ethnicities are now represented by only 30 – 100 individuals and are threatened with extinction.

Some modern proposals for new constellations were not successful ; an example is Quadrans, eponymous of the Quadrantid meteors, now divided between Boötes and Draco.

Some transferred to the INLA landing of the prison, but the majority of those who left are now independent and on E4 landing.

Some authors have used " basal " differently to mean a clade that is " more primitive " or less species-rich than its sister clade ; others consider this usage to be incorrect, and many now discourage the use of that term altogether to avoid such implications.

Some canids are now endangered in the wild due to hunting, habitat loss, and the introduction of diseases from domestic dogs.

Some U. S. government agencies now use ISO 8601 with 4-digit years.

Some small improvements were made to law and court procedure, for example all court proceedings were now conducted in English rather than in Law French or Latin.

Some digital synthesizers now exist in the form of " softsynth " software that synthesizes sound using conventional PC hardware, though they require careful programming and a fast CPU to get the same latency response as their dedicated equivalents.

Some South American plants formerly thought of as Daturas are now treated as belonging to the distinct genus Brugmansia ( Brugmansia differs from Datura in that it is woody, making shrubs or small trees, and in that it has pendulous flowers, rather than erect ones ).

Some scholars think that The porisms may have actually been a section of Arithmetica that is now lost.

Some economists also contend that now, according to Gresham's Law, a reversion to the colón would be disastrous to the economy.

Some relatively lightweight exoplanets, only a few times more massive than Earth ( now known by the term Super-Earth ), are known as well ; statistical studies now indicate that they actually outnumber giant planets while recent discoveries have included Earth-sized and smaller planets and a handful that appear to exhibit other Earth-like properties.

Some US colleges are now going green by signing the " President's Climate Commitment ," a document that a college President can sign to enable said colleges to practice environmentalism by switching to solar power, etc.

Some of Cheney's motorcycle designs are now famous in their own right, such as the competition BSA Gold Stars of Jerry Scott and Keith Hickman and the John Banks replica which used a BSA B50 engine specially tuned by Cheney.

Some countries are now economically dependent on food exports, which in some cases account for over 80 % of all exports.

Some of these markets are now served by light helicopters.

Some classifications now reserve the term woodland for an area with more open space between trees and distinguish among woodlands, open forests, and closed forests based on crown cover.

Some notable operations include: the Chadian – Libyan conflict in 1969 – 72 ( the first time that the Foreign Legion was sent in operations after the Algerian War ), 1978 – 79, and 1983 – 87 ; Kolwezi in what is now the Democratic Republic of the Congo in May 1978 ; Rwanda in 1990 – 94 ; and the Côte d ' Ivoire ( the Ivory Coast ) in 2002 to the present.