This week on the channel 2 videos this week

Can empty space crystallize? Matt O'Dowd's answer tops a million

The episode's final chapter turns to the most powerful magnetic fields in the universe, where the effect may finally have been seen.

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PBS Space TimeStory of September 29, 2026Trari Newsroom

Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.

The Universe May Have Just Revealed the True Nature of Empty Space

Five days old and past a million views, "The Universe May Have Just Revealed the True Nature of Empty Space" is the episode carrying PBS Space Time right now. Its premise is a lovely contradiction: in physics, nothing is never really nothing. Matt O'Dowd, the channel's astrophysicist host and a professor at CUNY's Lehman College, walks from the quantum vacuum through the way crystals bend light to the idea that empty space itself can be made to crystallize. The last chapter points to the most powerful magnetic fields in the universe, where the description says there is good evidence the effect has now been observed.

The second upload, barely a day old, asks what happens if you travel to the edge of the universe, and its short description hints that you might end up right back where you started. Behind both sits a nineteen-day-old, two-hour introduction to quantum mechanics that is still drawing a steady crowd.

Among the larger science channels, Hank Green and Steve Mould are both running well above their usual pace. For Space Time, the week belongs to empty space.

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