They are moving at a greater speed and at a different angle than other stars in the Milky Way Galaxy. For this reason, Arcturus will eventually move out of our line of sight. Image: Roberto Mura. A different theory suggests that the stars in the Arcturus moving group may have entered our system as a result of the Milky Way colliding with a smaller satellite dwarf galaxy more than 5 billion years ago.
Arcturus is believed to have come into our system about , years ago, and it will likely stay here for another , years before continuing its journey in the direction of the Virgo Cluster of galaxies. Seen from the Arcturus system, the star would have an apparent magnitude of To an observer in the Muphrid system, Arcturus would appear as bright as Venus is to us. A radial velocity study of the star in revealed that Arcturus showed variability with a frequency of a few microhertz. Arcturus is not very red and it falls somewhere between stability and variability.
Arcturus has a very high proper motion. It has a larger proper motion than any other first magnitude star in our neighbourhood with the exception of Alpha Centauri. Arcturus will make its closest approach to the Sun in about 4, years. When it does, it will be a few hundredths of a light year nearer to the solar system than it is now. Image: AlexbroPA at wikipedia. As the brightest star in the northern celestial hemisphere, Arcturus has been noted by observers since antiquity.
As they crossed the equator, they arrived to the latitude at which the star would appear directly overhead in the summer months. If they kept the star directly overhead, they would arrive to the Big Island of Hawaii. To sail back to Tahiti, the navigators could use Sirius , the bright zenith star of their home island. Arcturus exhibits both short- and long-period Doppler velocity variations with amplitudes of order meters feet per second Hatzes and Cochran, and NASA Observatorium See a discussion of " core helium burning " as part of stellar evolution and death.
As a star that has evolved out of the " main sequence ," Arcturus has fully shifted from the fusion of hydrogen to helium in at its core to the fusion of helium to carbon and oxygen, with trace activity of other nuclear processes. However, Arcturus is somewhat brighter than expected for a stable helium-burning star. Among the heavier elements and molecules detected in its stellar atmosphere have been iron Fe This helium-burning, orange-red giant stage is relatively brief, lasting tens to hundreds of million years e.
Eventually, the star will lose much of its current mass, from an intensified stellar wind that eventually puffs out its outer gas envelopes of hydrogen and helium and lesser amounts of higher elements such as carbon and oxygen into interstellar space as a planetary nebula.
The result will be a planet-sized, white dwarf core that gradually cools and fades in brightness from the shutdown of thermonuclear fusion. Bond STSci , R. Any Earth-type planets that orbited Arcturus during its youth probably have been burnt to a cinder and fallen into the star. Currently, the orbit of an Earth-like planet with liquid water around Arcturus may be centered around 11 AU -- between the orbital distances of Saturn and Uranus in the Solar System.
Astronomers would find it very difficult to detect an Earth-type planet in the water zone of this star using present methods. This result was unexpected because no companion had been reported previously and because the star's previously known characteristics such as observed radial velocity variations were incompatible with Arcturus as a binary system R.
Griffin, Lesser men would have been broken by the tragedy. Lesser men would have just given up. But lesser men did not take their place in the proud annals of Terran history. But it would be a mistake to deny all personal responsibility in falling into his web. It seems now the height of folly ever to have dealt with the man, but think of the situation when the Sara System died.
You had the mindless beasts of the zerg on one side. And in the middle you had the criminal bureaucracy of the old Confederacy of Man, which was willing to write off the population of two planets in order to learn more about its enemies. With such a surplus of devils in the universe, what did it matter if there was one more? Our responsibility is too great to do any less. Not by you, or the Confederates , or the Protoss or anyone! I will rule this sector or see it burnt to ashes around me.
I used you to destroy the Psi Disrupter. And now that I've got my Broods back, you're no longer necessary for my plans. I think I'll leave you here, Arcturus, among the ashes of your precious Dominion. I want you to live to see me rise to power.
And I want you to always remember in your most private moments that it was you who turned me loose in the first place. Only together shall we triumph. Only together shall we overcome. That is why we fight. He is now the most wanted man in this sector.
I want you to track him down, find those he is working for and those he loves the most, and I want them dead. I want them all dead. Agent XN , you will see to this personally. I want them all to suffer. Do not come back until it's done. Trust in Mengsk. War is coming. With all its glory Findlay - your freedom awaits.
I don't know what gutter my son fished you out of, but even you've got to realize that treacherous bitch cannot be saved And neither can you. And when this is over, you and me got a score to settle. And that should be the only fate to interest you as well. In case you haven't noticed, we're humans—not protoss, not zerg—and anything those knobbly-skinned mystics have told you is likely to be more full of stardust and fantasy than anything solid.
Now be a good son. Kill that mistake of a woman who just happens to be your father's worst enemy, not to mention humanity's, or give her to me and let Daddy do the dirty work.
The lawless terrorist James Raynor is dead. With his death comes a new era of peace. The protoss have retreated from our Dominion, and the zerg threat has been removed. Their Swarm is shattered and leaderless. Soon we will eradicate every last zerg on Char. In short, we have won. Our peace and security is assured. Good night, my faithful subjects. I knew you'd return to your true form. A monster. Now, you'll do exactly as I tell you if you care at all about Jim Raynor.
He's alive. So you'll keep your Swarm away from Korhal, and away from me, or he dies. I'll just leave it at that. Main article: Arcturus Mengsk Co-op Missions. One word that has never been used to describe him, however, is 'ordinary. While we struggle against one another - divided by the petty strife of our common history - the tide of a greater conflict is turning against us and is now threatening to destroy us all.
Korhal has chosen only its greatest rivals to receive this embassage. As with my world, each of yours has arisen to the fore through a strength and ingenuity unmatched by your neighbors - alien or human.
But be warned: pride comes before the fall. Even as your worlds are rich with a deserved confidence born of triumph, the somber truth may make you rich with wisdom.
We are - all of us - poised upon the very brink of total annihilation. Despite subtly exerting their will over our fringe worlds and hampering our expansion for decades, the Protoss have always claimed to have no interest in our affairs. Now at last they have revealed their true nature, seizing several human colonies in the Koprulu Sector.
My world has not lost any colonies, but it is abundantly clear to us with the Massacre on Tau Ceti and with the continued mobilization of Templars that the Protoss are preparing another offensive even as we speak. This tyranny in the Koprulu Sector is but a whisper - a faint harbinger of things to come. Listen now - before that whisper grows to a roar and all is lost. The Protoss possess an empire larger than any of us singly, but together, fellow humans, we may defeat them.
Do not let suspicion cloud your judgment. Humanity must recognize its fraternity or face certain extinction. Accessed Activision Blizzard. StarCraft: Brood War. Vivendi Games. Mission: First Strike in English. StarCraft Manual. Irvine, Calif. StarCraft: I, Mengsk. ISBN StarCraft: Uprising. ISBN eBook. Cast of Characters: Arcturus Mengsk. Blizzard Entertainment. Cast of Characters: Horace Warfield. Koprulu Sector Systems: Korhal. November 28, StarCraft: Ghost: Nova. Mission: Precursor bonus campaign, mission 1: " Strongarm " in English.
Map Archives: Precursor Campaign. StarCraft Nintendo of America, Inc. Mission: Officer Training in English. Three stations have fallen to the Zerg already. We've been unable to locate any source of military relief except Their liaison is holding on line. StarCraft: Liberty's Crusade. Mission: Desperate Alliance in English. Mission: The Jacobs Installation in English. I don't believe this! I saw Zerg within Confederate holding pens myself, and that was over a year ago.
It's clear the Confederates have known of these creatures for some time. For all we know they could be breeding the things! Be that as it may, our priority here is accessing the Confederate nework. We'll deal with the Zerg another day. Mission: Revolution in English. Mission: Norad II in English.
Mission: The Trump Card in English. I just don't think anyone deserves to have the Zerg unleashed on them. Carry out your orders, lieutenant. Just promise me we'll never do anything like this again. StarCraft II: Flashpoint. Mission: The Big Push in English. The Emitters are secured and on-line. The Confederates on Antiga were bad enough, but now you're going to use the Zerg against an entire planet? This is insane. Think this through.
You all have your orders. Carry them out. Mission: New Gettysburg in English. Cast of Characters: Kerrigan. Mission: The Hammer Falls in English. StarCraft: Brood War Manual. Cinematic: The Inauguration. I dreamed you were still alive Kerrigan: I was. While I was in the Chrysalis , I instinctively reached out to you and Arcturus telepathically. Mission: The New Dominion in English.
Mission: Assault on Korhal in English. Mission: Enslavers bonus campaign, mission 1: " Schezar's Scavengers " in English. StarCraft: Shadow of the Xel'Naga. StarCraft: Ghost Academy: Volume 3 paperback binding. Tokyopop, March 8, Augustgrad is easily the most heavily fortified city in all of Dominion space. Mission: Emperor's Fall in English. Mission: Emperor's Flight in English. Mission: Reign of Fire in English. Mission: The Liberation of Korhal in English. Mission: True Colors in English.
We had a deal! Did you really think I'd allow you to come into power again? You practically fed me to the Zerg on Tarsonis! You're directly responsible for the hell I've been through! Did you honestly think I'd let you get away with that?
I liberated this planet because it was the UED's primary staging point, not because I was under any obligation to you. Made a few concessions. You'd be surprised to see how many special interest groups in this sector want to see you dead. Mission: Omega in English. You've beaten me again. Just remember that I'll be out there Because sooner or later you'll make a mistake.
And when you do Mission: Epilogue in English. Koprulu Sector Systems: Tarsonis. Uncertain Future. Cast of Characters: Jim Raynor. Tokyopop , August 1, The Cinematic Art of StarCraft hardcover.
Blizzard Entertainment, October 18, September 27, StarCraft: Ghost: Spectres. Cinematic: Old Times. Conversations after The Outlaws in English. Tychus Findlay in English. Cinematic: The Showdown. Matt Horner in English. Conversations after Engine of Destruction in English.
Cinematic: Public Enemy. UNN newscast after " The Outlaws. Conversations after Zero Hour in English. UNN newscast after " The Evacuation. UNN newscast after " Safe Haven. UNN newscast after " Engine of Destruction. Adjutant in English. Conversations after Cutthroat in English. Cinematic: Hearts and Minds.
Cinematic: Dangerous Game. Cinematic: Hopes and Fears in English. Mission: Heart of the Swarm , Conviction in English. Cinematic: Transmission in English. StarCraft Field Manual. Insight Editions, November 17, Cutscenes: Leviathan in English. Cinematic: Believe in Me in English.
Cinematic: Reborn in English. Cinematic: Ascension in English. Relay satellite in English. Conversations before Planetfall. Mission: Heart of the Swarm , Planetfall in English. Mission: The Reckoning , in English. Cinematic: Homecoming. BlizzCon Foundations for the Future. StarCraft II. June 11,
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