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.
Proxima Centauri is the third star in the Alpha Centauri star system, also known as Alpha Centauri C. The three stars are in a complex orbital dance that brings each member closer to the Sun at some point in their mutual orbits. 1  Distance: 4.2 light-years. 2  Spectral Type: M5.5Vc.