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.
It's called geothermal energy-- from the Greek words geo, or earth, and therme, meaning heat. There is plenty of heat in the center of the Earth. The deeper you dig, the hotter it gets. The core, about 4,000 miles (6,437 kilometers) beneath the surface, can reach temperatures of 7,600 degrees Fahrenheit (4,204 degrees Celsius).