Astronomers speculate that NGC 300 X-1 is a new kind of Wolf-Rayet black hole binary system similar to the confirmed such system IC 10 X-1.

Astronomers have determined that it is between 6, 000 and 8, 000 years old ; it is approximately one light-year in diameter.

Astronomers know today that the Earth revolving around the sun is tilted on its axis, bringing each hemisphere now closer to the sun, now further away.

From 1988 he is an honourable member of the Society of Mathematicians, Physicists and Astronomers of Slovenia ( DMFA ).

* 2002 — Astronomers at the Max Planck Institute for Extraterrestrial Physics present evidence for the hypothesis that Sagittarius A * is a supermassive black hole at the center of the Milky Way galaxy

Astronomers think that the sun had about 70 – 75 % of the present luminosity, yet temperatures appear to have been near modern levels even within 500 Ma of Earth's formation, which is puzzling ( the faint young sun paradox ).

The Jalali calendar was introduced by Omar Khayyám alongside other Mathematicians and Astronomers in Nishapur, today it is one of the oldest calendars in the world as well as the most accurate solar calendar in use today.

Astronomers categorize it as a main-sequence star of spectral class K2, which means that energy generated at the core through nuclear fusion of hydrogen is emitted from the surface at a temperature of about 5, 000 K, giving the star an orange hue.

Astronomers have long believed that the Magellanic Clouds have orbited the Milky Way at approximately their current distances, but evidence suggests that it is rare for them to come as close to the Milky Way as they are now.

Astronomers have speculated that either intense star formation regions or active galactic nuclei ( which contain supermassive black holes ) may be responsible for the intense dust heating that produces this emission, although the general consensus is that both may be present in most ULIRGs.

Astronomers have paid particular attention to whether earthshine measurement can detect the red edge, a spectral feature that is due to the plants.

Astronomers first began to suspect that the Milky Way is a barred spiral galaxy in the 1990s .< ref > Their suspicions were confirmed by the Spitzer Space Telescope observations in 2005 which showed the galaxy's central bar to be larger than previously suspected.

Astronomers surmise that the disk is the remnants of a smaller galaxy that merged with NGC 7052.

Astronomers were able to discover that IRS2 is in fact a twin system composed of two almost equally massive stars.

The International Fellowship of Rotarian Amateur Astronomers ( IFRAA ) is a fellowship group of amateur astronomers which spans the continents.

Astronomers anticipate an increase of activity in the region of the black hole, giving opportunity for further study, in mid-2013, as it is expected that a large gas cloud will be disrupted by close approach.

St Margaret's Church ( built 1839 – 41, architect: John Brown ) is the burial place of three Astronomers Royal: Edmond Halley, Nathaniel Bliss and John Pond.

Astronomers Robert Grant and William Swan ( of the United Kingdom ) and Karl Ludwig von Littrow ( of Austria ) observe this eclipse and determine that solar prominences are part of the Sun because the Moon is seen to cover and uncover them as it moves in front.

The Association of Bangalore Amateur Astronomers ( ABAA ) is an independent association housed in the Jawaharlal Nehru Planetarium, Bangalore.

Farpoint Observatory is an astronomical observatory owned and operated by Northeast Kansas Amateur Astronomers ' League, or NEKAAL.

Norman Sperling is a recipient of the National Service Award by the Western Amateur Astronomers, and had been recognized " For special and meritorious service for his unusual dedication and service to the astronomical community in all areas of astronomy " by the Astronomical Association of Northern California.

Astronomers believe that the Canis Major Dwarf Galaxy is in the process of being pulled apart by the gravitational field of the more massive Milky Way galaxy.

Astronomers were surprised at this as the Moon is the only large object in orbit around the Earth and anything else would have been ejected long ago due to perturbations with the Earth, the Moon and the Sun.

Astronomers responded by introducing the deferent and epicycle, which caused a planet to vary its distance.

Astronomers had made careful photometric measurements of several stars known to be orbited by planets, in the hope that they might observe a dip in brightness caused by the transit of the planet across the star's face.

Astronomers had made careful photometric measurements of several stars known to be orbited by planets, in the hope that they might observe a dip in brightness caused by the transit of the planet across the star's face.

Astronomers measure the angular separation of two stars by imagining two lines through the centre of the Earth, each intersecting one of the stars.

Astronomers use the Julian calendar for years before 1582, including this year 0, and the Gregorian calendar for years after 1582 as exemplified by Jacques Cassini ( 1740 ), Simon Newcomb ( 1898 ) and Fred Espenak ( 2007 ).

* Star with Midriff Bulge Eyed by Astronomers, JPL press release, July 25, 2001.

Astronomers were surprised by these " hot Jupiters ," since theories of planetary formation had indicated that giant planets should only form at large distances from stars.

Astronomers believe that the matter composing the Oort cloud formed closer to the Sun and was scattered far out into space by the gravitational effects of the giant planets early in the Solar System's evolution.

Astronomers can determine the mass, age, chemical composition and many other properties of a star by observing its spectrum, luminosity and motion through space.

Astronomers of the era expected that changes over time in the apparent separation and relative location of these stars would provide evidence for both the proper motion of stars and, by means of parallax shifts in their separation, for the distance of stars from the Earth ( a method first suggested by Galileo Galilei ).

Astronomers found that it was more accurate to establish time by observing stars as they crossed a meridian rather than by observing the position of the Sun in the sky.

* Astronomers have reported that spectral class T brown dwarves ( the ones with the coolest temperatures ) are colored magenta because of absorption by sodium and potassium atoms of light in the green portion of the spectrum.

From " Dante and the Early Astronomers " by M. A. Orr, 1913.

On Monday 14 April 2008, Cheshire's 106. 9 Silk FM unveiled to its listeners their own campaign song to save Jodrell Bank, entitled " The Jodrell Bank Song " and sung by a group dubbed " The Astronomers ".

Astronomers have been conducting surveys to locate the NEOs, many ( as of early 2007 ) funded by NASA's Near Earth Object ( NEO ) program office as part of their Spaceguard program.

In Astronomers, Scribes, and Priests: Intellectual Interchange between the Northern Maya Lowlands and Highland Mexico in the Late Postclassic Period, edited by Gabrielle Vail and Christine Hernandez, pp. 77 – 114.

Astronomers who believed quasars were not at cosmological distances argued that the Eddington luminosity set limits on how distant the quasars could be since the energy output required to explain the apparent brightness of cosmologically-distant quasars was far too high to be explainable by nuclear fusion alone.

These productions include the official International Year of Astronomy ( IYA2009 ) planetarium show " We are Astronomers " which was funded by the UK Science and Technology Facilities Council ( STFC )

Astronomers announce this as evidence that the theory of the cosmological constant proposed, but later discarded, by Einstein may have been right after all.

Astronomers observe the sky for X-rays emitted by infalling matter to detect black holes.

Astronomers were able to distinguish the warmest parts of the gas heated by the violent shocks and found that they form a complex double-bubble shape.