You can take four or five pages, to describe the power armour your galactic warrior wears. You can say how it was developed, how much it cost and how many people he had to kill to obtain it.
It will only become real to your readers, when you mention the annoying way it rubs behind your hero’s left knee and the way the servo that operates the right thumb, keeps sticking. If the sticking servo nearly causes his death, that’s perfect.
Truth is in the ordinary, in the everyday little quirks and annoyances.