) Thus the main sequence represents the primary hydrogen-burning stage of a star's lifetime.

The outermost planet discovered appears to be within the system's habitable zone, where liquid water would remain stable ( more accurate data on the primary star's luminosity will be required to know for sure where the habitable zone is ).

After several months of repairs and refits, the Dauntless ' first officer becomes her new captain, and after a brief resupply mission to the surviving Vesuvi colonies, an investigation into the star's destruction begins.

As the date for Roxy's return draws nearer, Dinky becomes more and more desperate to prove that she is Roxy's daughter, visiting the star's childhood home ( which is maintained as a museum ), and obsessively questioning Denton about what happened the night she left, believing that Roxy will take her away to a new life.

Although he did not direct Cooper's second starring western, The Last Outlaw, the new star's third lead western, Nevada, was once again assigned to Waters, along with another Cooper vehicle, the French Foreign Legion saga, Beau Sabreur, a sequel to Famous Players ' biggest hit of 1926, Beau Geste, which starred Ronald Colman.

Then, after a confrontation with them at a picnic (" Get a Lot ") Wish Bear accidentally wishes Twinkers away to the new bears ; they soon abuse the star's power with an amusement park focusing on Me Bear, a mud pie for Messy Bear, and a huge noisy motorcycle for Too Loud Bear.

The idea that immediately suggested itself was that the star's declination varied because of short-term changes in the orientation of the Earth's axis relative to the celestial sphere – a phenomenon known as nutation.

The star's fanbase was nevertheless strong enough to survive this smear campaign, and he was heartened by declarations of support.

: The first, Doctor Syn ( 1937 ), featured noted actor George Arliss in the title role and was its star's last film.

* " Hee Haw Salutes ...": Two or three times in each episode, Hee Haw would salute a selected town ( or a guest star's hometown ) and announce its population, which was sometimes altered for levity, at which point the entire cast would then ' pop up ' from the cornfield, shouting " SAA-LUTE !!

As evolutionary models of stars were developed during the 1930s, it was shown that, for stars of a uniform chemical composition, a relationship exists between a star's mass and its luminosity and radius.

With so many important players, Paramount was able to introduce " block booking ", which meant that an exhibitor who wanted a particular star's films had to buy a year's worth of other Paramount productions.

Later a numbering system based on the star's right ascension was invented and added to John Flamsteed's star catalogue in his book " Historia coelestis Britannica " ( the 1712 edition ), whereby this numbering system came to be called Flamsteed designation or Flamsteed numbering.

Above a certain mass ( estimated at approximately 2. 5 solar masses and whose star's progenitor was around 10 solar masses ), the core will reach the temperature ( approximately 1. 1 gigakelvins ) at which neon partially breaks down to form oxygen and helium, the latter of which immediately fuses with some of the remaining neon to form magnesium ; then oxygen fuses to form sulfur, silicon, and smaller amounts of other elements.

The first person to publish a star's parallax was Friedrich G. W. von Struve, when he announced a value of 0. 125 arcseconds ( 0. 125 ″) for Vega.

Despite the bleak view in the strip, McCay's work was so popular that he was hired by William Randolph Hearst in 1911 with a star's salary.

The majority of the star's mass was shed, most likely as a stellar wind.

Since he thought Rhodes was 5, 000 stadia due north of Alexandria, and the difference in the star's elevation indicated the distance between the two locales was 1 / 48th of the circle, he multiplied 5, 000 by 48 to arrive at a figure of 240, 000 stadia for the circumference of the earth.

The purpose of the observation was to photograph the sun's corona and the apparent distorted placement of stars due to the sun's gravitational pull on those star's rays while passing by the sun.

In a departure from reality, Rukbat is a class G ( yellow ) star in the series ; the real Rukbat is a blue, class B star — although it could be that the star Pern orbits is simply a solar-type star that is near the real Rukbat which was given the brighter star's name for convenience.

Based on unexplained changes in the position of Epsilon Eridani between 1938 and 1972, Dutch – American astronomer Peter van de Kamp proposed that an unseen companion with an orbital period of 25 years was causing gravitational perturbations in the star's position.

The first parallax measurement of Wolf 359 was reported in 1928 from the Mount Wilson Observatory, yielding an annual shift in the star's position of.

The initial report of a planet was based on a very delicate analysis of the star's position over the years which suggested reflex orbital motion due to one or more companions.

While he was reviewing star charts and photographic plates he noted the star's very high proper motion of more than 8 arc seconds per year.

He was nearly dismissed for interpreting Irving's direction, " You must imitate me ", as an instruction to give an impersonation of the star's well-known mannerisms.

The planet, designated Upsilon Andromedae b, was discovered by measuring changes in the star's radial velocity induced by the planet's gravity.

Clifford has since represented various clients, including: David Copperfield ; Mohamed Al-Fayed ; Simon Cowell ; brain-damaged boxer Michael Watson ; Liverpool left-wing politician Derek Hatton, for whom Clifford created an affair in order to change his image ; former MI6 officer Richard Tomlinson ; Norfolk farmer Tony Martin, who was imprisoned for fatally shooting a burglar ; Rebecca Loos, when she negotiated with the press about her alleged affair with England football captain David Beckham ; Cheryl Cole ; Celebrity Big Brother 2007 winner Shilpa Shetty ; and Jade Goody, in the period of the reality star's cervical cancer and death.

For approximately two to three weeks on either side of November 30, Antares is not visible in the night sky, because it is near conjunction with the Sun ; this period of invisibility is longer in the Northern Hemisphere than in the Southern Hemisphere, since the star's declination is significantly south of the celestial equator.

Some of these may have once belonged to a star's planetary system before being ejected from it ; the term " rogue planet " is sometimes applied to such objects.

Giant planets are more likely to be found the higher the star's metallicity ; however, smaller planets are present around stars with a wide range of metallicities.

If " hot Jupiters " did exist in close orbit they would likely disrupt the star's habitable zone ; their exclusion is thus a positive for the possibility of Earth-like planets.

As a result, the most luminous stars in the galaxy are usually the youngest ; as stars evolve, their stellar wind causes them to lose mass, a phenomenon which varies greatly with each stellar class but which nevertheless causes a diminution in the star's luminosity over its lifetime.

Binary stars are classified into four types according to the way in which they are observed: visually, by observation ; spectroscopically, by periodic changes in spectral lines ; photometrically, by changes in brightness caused by an eclipse ; or astrometrically, by measuring a deviation in a star's position caused by an unseen companion.

Hubble's Variable Nebula is illuminated by R Monocerotis, a young variable star embedded in the nebula ; the star's unique interaction with the material in the nebula makes it both an emission nebula and a reflection nebula.

: Principal actors, ( Sometimes the stars ' and director's credits will be reversed, depending on the star's deal with the studio ; sometimes, as in the Rodgers and Hammerstein films, or as in all three film versions of Show Boat, or, as in many of Disney's films, the title of the film will be shown before the names of its actors ; sometimes, as in many of Cannon's films, the name ( s ) of the principal actor ( s ) will be shown before the name ( s ) of the producer ( s ), i. e. " The Cannon Group presents X in a Golan-Globus production of a Y film ").

Four Sobule compositions or co-compositions appear on the series star's debut album, Unfabulous and More: Emma Roberts: a Roberts cover version of " Mexican Wrestler " from Sobule's album Pink Pearl ; " Punch Rocker " and " 94 Weeks ( Metal Mouth Freak )," both written by Sobule for Roberts ' character to " compose " on the program ; and " New Shoes ," a track co-written by Sobule with Unfabulous series creator Sue Rose.

: If a planet crosses ( or transits ) in front of its parent star's disk, then the observed brightness of the star drops by a small amount.

In it, Kepler addressed the star's astronomical properties while taking a skeptical approach to the many astrological interpretations then circulating.

For at least a portion of its life, a star shines due to thermonuclear fusion of hydrogen into helium in its core, releasing energy that traverses the star's interior and then radiates into outer space.

An example of how this works: if a star's position is measured by someone today, he / she then uses a standard transformation to obtain the position expressed in terms of the standard reference frame of J2000, and it is often then this J2000 position which is shared with others.

The star's envelope would then warm up enough to trigger deuterium fusion, which would lead to rapid expansion.

Due to core nuclear reactions being slightly slower, the star contracts and since very similar energy is coming from a much smaller area ( photosphere ) then the star's surface becomes much hotter.

The two magnetic nozzles would then be located on the star's equator.

If the distance was great enough for an approaching star's " fast " signal to catch up with and overtake the " slow " light that it had emitted earlier when it was receding, then the image of the star system should appear completely scrambled.

The star's gravity then pulls its outer layers rapidly inward.

When it is then set to an observer's Local Mean Sidereal Time then a star will transit the meridian ( passing directly north or south ) at the sidereal time of the star's Right Ascension.

If a planet forms far away from a red dwarf so as to avoid tidal locking, and then migrates into the star's habitable zone after this turbulent initial period, it is possible that life may have a chance to develop.

As a result, Pleione actually revolves on its axis once every 11. 8 hours compared to Achernar's 48. 4 hours .< ref name =" NOTEROTATION " group =" note "> The time it takes for Achernar ( T < sub > A </ sub >) and Pleione ( T < sub > P </ sub >) to rotate on its own axis is determined by taking the star's radius in solar units, multiplying by the Sun's radius in kilometers, then calculating the star's circumference at the equator and dividing by its speed of rotation per hour.