Open "About This Mac" window How can I display About This Mac window?

I know that it is managed by the loginwindow process so I tried to open in applescript(I'm still a beginner).

tell application "System Events" to tell process "loginwindow"
    open window "About This Mac"
end tell


The code keeps on running. It neither stops nor displays window nor shows any error. Is it even right command?

So, how can I open About This Mac window? 

The solution is not limited to applescript. Is there a way to open it from terminal?
I don't know about the applescript but I know how to do it terminal.

Use open command in the Terminal to open About This Mac window.

open -a "About This Mac"