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.
The following lists some levels of confidence with their related values of alpha: 1  For results with a 90% level of confidence, the value of alpha is 1 - 0.90 = 0.10. 2  For results with a 95% level of confidence, the value of alpha is 1 - 0.95 = 0.05. 3  For results with a 99% level of confidence, the value of alpha is 1 - 0.99 = 0.01.