en.wikipedia.org/wiki/Acton_(Turrell)

Current Newfields records do not place Acton in the Nagler Family Gallery. The museum’s official collection entry for the work says it is “On display in W203.” Newfields also states that James Turrell’s Acton is part of The Message is the Medium: Contemporary Art, and the official exhibition page says that exhibition is “on view in the Allen Whitehill Clowes Special Exhibition Space.”

So the article’s statement that the work “is located in the Nagler Family Gallery” is no longer accurate according to the museum’s current records.

Newfields’ official gallery label for Acton explains the two parts of the work this way: “the ‘viewing space,’ where the audience stands to view the work, and the ‘sensing space,’ which is filled with diffused light.”

That directly contradicts the article’s statement that the visitor enters the “sensing space” and that this entered space is lit by lamps aimed at the walls. According to the museum’s own description, the visitor stands in the viewing space, and the sensing space is the separate illuminated area seen through the opening.

The official Newfields description of Acton says the audience stands in the “viewing space” and looks toward the “sensing space,” which is the illuminated area behind the opening. The article instead calls the area beyond the opening the “viewing space.”

Because Newfields explicitly assigns those names the other way around, this phrase misidentifies which part of the installation the viewer sees through the aperture.