Secretary of Energy Steven Chu took to Facebook to show off his inner fanboy, sprinkling his pseudo-review of the box office record-smashing movie “The Avengers” with calls for tax credits and pleas for broader interest in science.

Unlike some professional film critics, Chu stays away from spoilers and philosophical debates about whether Joss Whedon’s ensemble super hero flick should be praised for carving out its own place in the Marvel-verse or panned for departing from the sacrosanct comic book canon.

What he does want to discuss is the coveted “Tesseract,” the source of unlimited energy that drives the intergalactic thrill ride: