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 is the closest star to Earth. Faint red Proxima Centauri â at only 3,100 K and 500 times less bright than our sun â is nearly a fifth of a light year from Alpha Centauri A and B. This great distance is what calls into question its status as part of a triple star system.ottom line: The Alpha Centauri system is the closest star system to our sun. On our skyâs dome, we see this multiple system as a single star â the third-brightest star visible from Earth. Charts, photos and info about this fascinating star system.