1 To work in the Security and Maintenance window, you should be logged into an administrator account. 2  From the desktop window, right-click the Start button (the button with the Windows icon) from the bottom-left corner of the screen. 3  From the context menu that appears, click Control Panel.
Alpha Centauriâs surface temperature is a few degrees Kelvin less than our sun (that is, about 5770 k), but its greater diameter (about 25% more than the sun) and the overall larger surface area gives it a luminosity nearly 1.6 times that of our star.
Alpha Centauri is a multiple-star system, with its two main stars being Alpha Centauri A (Î± Cen A) and Alpha Centauri B (Î± Cen B) , usually defined to identify them as the different components of the binary Î± Cen AB.