Alpha is a planet orbiting the larger of the two stars in the Alpha Centauri system.

In Asimov's Foundation Series, Alpha Centauri is cited by Lord Dorwin as one of those where humankind potentially originated. The others are 'Sol', Sirius, 61 Cygni and Arcturus. It is in fact the system closest to Earth. Beyond mentioning that it is in the Sirius Sector, Dorwin gives no further details. Hari Seldons holographic image, pictured on a paperback edition of Foundation, appears at various times in the First Foundations history, to guide it through the social and economic crises that befall it. ... This is a list of minor characters in Isaac Asimovs Foundation, Robot, and Empire series. ... This article is on the history of Earth, as presented in Isaac Asimovs Foundation Series, Robot Series, and Empire Series. ... Sirius (α CMa / α Canis Majoris / Alpha Canis Majoris) is the brightest star in the nighttime sky, with a visual apparent magnitude of −1. ... 61 Cygni is a star in the constellation Cygnus. ... Arcturus (α Boo / α Boötis / Alpha Boötis) is the brightest star in the constellation Boötes, and the third brightest star in the night sky, with a visual magnitude of −0. ... Earth (often referred to as The Earth) is the third planet in the solar system in terms of distance from the Sun, and the fifth in order of size. ... In Isaac Asimovs Galactic Empire, the Sirius sector was one of the Empires important administrative divisions. ...

In a later book, Foundation and Earth, Alpha is a planet orbiting the larger of the two stars in the Alpha Centauri system. Golan Trevize discovers Alpha when he attempts to find the location of Earth by locating the center of a 'best sphere' made from the co-ordinates of the 50 Spacer worlds. Foundation and Earth Foundation and Earth (1986) is a science fiction novel by Isaac Asimov, the fifth novel of the Foundation Series and chronologically the last in the series. ... Golan Trevize is a fictional character, a major figure in two books in Isaac Asimovs Foundation Series: Foundations Edge and Foundation and Earth. ... In Isaac Asimovs Foundation/Empire/Robot series, the Spacers were the first humans to emigrate to space. ...

The planet is discovered to be entirely covered by an ocean, with the exception of a single island, called New Earth. On New Earth, the inhabitants live a simple lifestyle.

The description of New Earth's culture in Foundation and Earth cannot be entirely relied upon. While the inhabitants seemed to be warm and welcoming, co-existing peacefully in an egalitarian society, this could have been a show designed to put the foreign visitors at ease while they were infected with a virus. The only certain facts about New Earth culture are that both women and men are completely shirtless, weather permitting, and the men engage in long sea voyages to fish. Shirtless man Bare chested refers to the state of not wearing any clothes above the waist. ...

The planet Alpha was apparently terraformed habitable by the old Galactic Empire and its only land surface is the 250×65km (155×40 mile) on which the Alphans live. This can be explained by its history: according to information pieced together by Janov Pelorat, the Galactic Empire, likely under Kandar V, laboured to create land on which the last refugees of Earth could live. Then the funds and interest of the Empire ran out and the plans for continents were scrapped. Alpha was left alone for millennia, with only highly advanced weather control and biotechnology. In Isaac Asimovs Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of planets settled by humans across the whole galaxy. ... Janov Pelorat is a character in the Foundation Series of books by Isaac Asimov. ...

Statistics

Star: Alpha (Alpha Centauri A)

• Spectral type: G-2
• Diametre: 1,400,000 km (870,000 miles)
• Mass: 1.02 times Terminus' sun, times Earth's sun
• Rotation: <30 days
• Revolution: 80 years
• Surface temperature: 6,000 K (11,000ºF)
• Inhabited planet: Alpha II
• Number of planets: 4
• Nearest star: Beta, or 'the Companion' (Alpha Centauri B)
• Nearest star: Sol