What is the meaning of "by authority" in Surah Ar-Rahman ayat 33?

What exactly is the meaning of the word **bisultan بسلطان** in [Surah Ar-Rahman ayat 33](http://quran.com/55/33) : **Sahih International**: >O company of jinn and mankind, if you are able to pass beyond the regions of the heavens and the earth, then pass. You will not pass except **by authority** (*bisultan*) [from Allah ]. According to this ayah/verse, we cannot pass the galaxy or heavens except from the authority of Allah. However, nowadays NASA has the technology to go even to Mars; in the future humans may well have technology that can go to another galaxy. Does "You will not pass except by authority" mean that humans cannot pass and go to another galaxy without the permission of Allah? Could someone please explain the meaning of this phrase to me?